JPS61234331A - Vibration damping characteristic tester - Google Patents
Vibration damping characteristic testerInfo
- Publication number
- JPS61234331A JPS61234331A JP60075351A JP7535185A JPS61234331A JP S61234331 A JPS61234331 A JP S61234331A JP 60075351 A JP60075351 A JP 60075351A JP 7535185 A JP7535185 A JP 7535185A JP S61234331 A JPS61234331 A JP S61234331A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- vibration damper
- towed
- wave receiver
- towing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は曳航型受波器等に弔いら詐る振動減衰器の減衰
特性を知るための試験機器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to test equipment for determining the damping characteristics of a vibration damper used in a towed wave receiver or the like.
第２図は曳航を受波器と共に振動減衰器が船舶によって
曳航されている状態を示す概略図で、図において１は曳
航型受波器、２は該曳航型受波器１に取付けらｎた振動
減衰器、３は船舶、４は該船舶３上に設置さｎたウィン
チ、５は該ウィンチ４から繰出される曳航ケーブルであ
シ、該曳航ケーブル５に前記振動減衰器２が取付けらｎ
ていて、かつこの振動減衰器２内に配置さｎた信号線６
によシ曳航型受波器１と曳航ケーブル５とが電気的に接
続さｎている。Fig. 2 is a schematic diagram showing a state in which a vibration damper is being towed by a ship together with a wave receiver. 3 is a ship, 4 is a winch installed on the ship 3, 5 is a towing cable fed out from the winch 4, and the vibration damper 2 is attached to the towing cable 5. n
a signal line 6 which is
The towed type wave receiver 1 and the towed cable 5 are electrically connected.
前記曳航型受波器１は図示したように曳航ケーブル５を
介して船舶３によシ海中を曳航され、海中の音波を受波
して電気信号に変換するもので、この電気信号は信号線
６及び曳航ケーブル５を通じて船舶３１Ｃ送られる。As shown, the towed receiver 1 is towed through the sea by a ship 3 via a towing cable 5, and receives sound waves in the sea and converts them into electrical signals, and this electrical signal is transmitted through a signal line. 6 and the towing cable 5 to the ship 31C.
この構成において、曳航ケーブル５には曳航時に船舶か
らの振動が伝達されると共に、曳航ケーブル５そのもの
が海水の抵抗等を受けて振動を発生する。In this configuration, vibrations from the ship are transmitted to the towing cable 5 during towing, and the towing cable 5 itself generates vibrations due to resistance of seawater and the like.
そのため、こｎらの振動が直接曳航型受波器１に伝わる
のを防止すると共に、曳航型受波器１が影響を受けない
程度に振動を減衰する目的で、伸縮性のあるゴム等によ
り形成した振動減衰器２が曳航型受波器１と曳航ケーブ
ル５との間に設けらｎるが、この振動減衰器２の性能が
悪いと、つまり振動減衰効果が小さいと曳航型受波器１
に前記の振動が伝達されてしまい、この振動が加速度雑
音となって曳航型受波器１の機能が阻害さすることにな
る。Therefore, in order to prevent these vibrations from being transmitted directly to the towed receiver 1 and to attenuate the vibrations to the extent that the towed receiver 1 is not affected, elastic rubber or the like is used. The formed vibration damper 2 is installed between the towed type receiver 1 and the towed cable 5, but if the performance of this vibration damper 2 is poor, that is, the vibration damping effect is small, the towed type receiver 1
The above-mentioned vibration is transmitted to the towed wave receiver 1, and this vibration becomes acceleration noise, which impedes the function of the towed wave receiver 1.
そこで、従来から振動減衰器２の使用前に、その性能の
試験を行っているが、従来の試験方法としては前述した
第２図の場合と同様に、実際に曳航ケーブル５を介して
曳航型受波器１と共に振動減衰器２を船舶３によフ曳航
し、このときの曳航を受波器１に発生する雑音を測定し
て、この雑音の値から振動減衰器２の振動減衰特性を知
る方法が採用さｎている。Therefore, the performance of the vibration damper 2 has been conventionally tested before its use, but the conventional test method is to actually test the towed The vibration damper 2 is towed together with the receiver 1 by a ship 3, the noise generated in the receiver 1 during the towing is measured, and the vibration damping characteristics of the vibration damper 2 are determined from the value of this noise. A method of knowing has been adopted.
しかしながら、上述した従来の試験方法では、実際の曳
航状態での振動減衰器の振動減衰特性を測定できるもの
の、そのために船舶を航行させなければならないので、
多大な費用と人手及び時間がかかると埴う問題があり、
また海象によシ海中雑音のレベルが変化するため、安定
した試験データが得にくいという問題もあった。However, although the conventional test method described above can measure the vibration damping characteristics of the vibration damper under actual towing conditions, the ship must be sailed for this purpose.
There is a problem that it takes a lot of money, manpower and time,
Another problem was that it was difficult to obtain stable test data because the level of underwater noise changed depending on sea conditions.
本発明はこのような問題を解決するためになさｎたもの
で、船舶によシ曳航した場合とほぼ同じ状態で振動減衰
器の振動減衰特性の試験を安価にかつ多数の人手や時間
をかけることなく容易に行うことができると共に、安定
した試験データを得ることができる振動減衰特性試験機
を実現することを目的とするものである。The present invention was made to solve such problems, and it is possible to test the vibration damping characteristics of a vibration damper in almost the same conditions as when it is towed by a ship, at a low cost and requiring a large number of manpower and time. The purpose of the present invention is to realize a vibration damping characteristic tester that can easily perform vibration damping characteristics and obtain stable test data.
上述し要目的を達成するため、本発明は水または海水を
入れた水槽内に振動減衰器を収容してその両端に加速度
計を取付け、この振動減衰器に前端側から振動を与える
振動付与手段を一方の加速度計に結合すると共に、振動
減衰器の後端には擬似曳航型受波器を連結して、この擬
似曳航型受波器には振動減衰器に張力を与える引張手段
を接続したものである。In order to achieve the above-mentioned object, the present invention includes a vibration damper housed in a water tank filled with water or seawater, accelerometers attached to both ends of the vibration damper, and a vibration imparting means for applying vibration to the vibration damper from the front end side. was connected to one of the accelerometers, and a pseudo towed receiver was connected to the rear end of the vibration damper, and a tensioning means for applying tension to the vibration damper was connected to the pseudo towed receiver. It is something.
上述した手段によｎば、水槽内の振動減衰器は船舶で曳
航された状態とほぼ同じ状態になるので、振動付与手段
によシ振動減衰器に振動を与え、このときの加速度を２
個の加速度計で測定して、両者の直を比較すｎば、曳航
時における振動減衰器の振動減衰特性を知ることができ
る。According to the above-mentioned means, the vibration damper in the water tank is in almost the same state as when it is towed by a ship, so the vibration applying means applies vibration to the vibration damper, and the acceleration at this time is reduced by 2.
By measuring with two accelerometers and comparing the two values, it is possible to know the vibration damping characteristics of the vibration damper during towing.
また、前記振動付与手段及び引張手段による加振条件を
変えることで詳細な特性データも得ることができる。Furthermore, detailed characteristic data can be obtained by changing the conditions for excitation by the vibration applying means and the tension means.
従って、こｎによｎば陸上において振動減衰器の振動減
衰特性の試験を容易に実施することができ、安定した試
験データも得らｎる。Therefore, it is possible to easily test the vibration damping characteristics of the vibration damper on land, and stable test data can also be obtained.
以下図面を参照して実施例を説明する。 Examples will be described below with reference to the drawings.
第１図は本発明による振動減衰特性試験機の一実施例を
示す断面図で、図において８は水槽であシ、この水槽８
内には水または海水９が入孔らｎている。FIG. 1 is a sectional view showing an embodiment of the vibration damping characteristic testing machine according to the present invention. In the figure, 8 is a water tank.
Water or seawater 9 enters the hole.
１０と１１は加速度計で、一方の加速度計１０は振動減
衰器２の前端に取付けらｎ、他方の加速度計１１は振動
減衰器２の他端に取付けら几ている。10 and 11 are accelerometers; one accelerometer 10 is attached to the front end of the vibration damper 2, and the other accelerometer 11 is attached to the other end of the vibration damper 2.
この加速度計１０と１１は後述する振動付与手段によっ
て振動減衰器２に振動が与えられたとき、振動減衰器２
両端における軸方向の加速度を測定するもので、各々計
測器１２に接続さｎている。These accelerometers 10 and 11 act on the vibration damper 2 when vibration is applied to the vibration damper 2 by a vibration applying means to be described later.
It measures the acceleration in the axial direction at both ends, and is connected to a measuring device 12, respectively.
１３は前記水槽８の側壁を貫通させたピストンロッドで
、矢印Ａで示した方向に往復運動できるようにしてあり
、また前記貫通部は水槽８の水または海水９が漏れない
ようにシールが施さルている。Reference numeral 13 denotes a piston rod that penetrates the side wall of the water tank 8, and is designed to be able to reciprocate in the direction shown by arrow A, and the penetrating portion is sealed to prevent water from the water tank 8 or seawater 9 from leaking. There is.
このピストンロッド１３の一端は前記加速度計１０に結
合さｎておシ、かつ他端は油圧源１４に接続さｎたシリ
ンダ１５内のピストンｉｓと連結材１７を介して連結さ
ｎていて、これら１３〜１７の部品によシ前記振動減衰
器２に振動を与える振動付与手段を構成している。One end of this piston rod 13 is connected to the accelerometer 10, and the other end is connected to a piston in a cylinder 15 connected to a hydraulic power source 14 via a connecting member 17, These 13 to 17 parts constitute a vibration imparting means for imparting vibration to the vibration damper 2.
ここで、この振動付与手段によシ振動減衰器２に与えら
ｎる振動は、第２図において曳航ケーブル５から振動減
衰器２に伝達される振動に相当するもので、その振幅と
周波数は前記油圧源１４を制御することで自由に設定す
ることが可能である。Here, the vibration imparted to the vibration damper 2 by this vibration imparting means corresponds to the vibration transmitted from the towing cable 5 to the vibration damper 2 in FIG. 2, and its amplitude and frequency are By controlling the hydraulic pressure source 14, it is possible to freely set the pressure.
１Ｂは前端を他方の加速度計１１を介して振動減衰器２
の後端に連結した擬似曳航型受波器で、第２図で説明し
た曳航型受波器１と質量を同じにしてあシ、実際の曳航
状態によシ近い形で試験するために弔いらルる。この擬
似曳航型受波器１８は振動減衰器２と共に前記水槽８内
に収容され、水没している。1B connects the front end to the vibration damper 2 via the other accelerometer 11.
This is a pseudo towed type receiver connected to the rear end, which has the same mass as the towed type receiver 1 explained in Fig. 2, and is designed to be tested in a form similar to the actual towed condition. Raluru. This pseudo towed type receiver 18 is housed in the water tank 8 together with the vibration damper 2 and is submerged in water.
１９はワイヤロープで、その一端は前記擬似曳航型受波
器１８の後端に結合さｎ５また該ワイヤロープ１９の他
端には重錘２０が取付けらｎている。そしてこのワイヤ
ロープ１９は水槽８内に設けらｎたローラ２１、水槽８
外において前記ローラ２１の上方に配置さ汎たローラ２
２、及びこのローラ２２の側方に設けらｎたローラ２３
に引回わさｎていて、こｎら１９〜２３の部品によシ前
記振動減衰器２に張力を与える引張手段が構成されてい
る。Reference numeral 19 denotes a wire rope, one end of which is connected to the rear end of the pseudo towed receiver 18, and a weight 20 is attached to the other end of the wire rope 19. This wire rope 19 is connected to a roller 21 provided in the water tank 8 and
A roller 2 disposed above the roller 21 on the outside
2, and a roller 23 provided on the side of this roller 22.
These parts 19 to 23 constitute a tensioning means for applying tension to the vibration damper 2.
すなわち、振動減衰器２に結合された擬似曳航型受波器
１８の後端には重錘２０の重量に等しい張力Ｔが矢印Ｂ
方向に加えらｎることになる。That is, a tension T equal to the weight of the weight 20 is applied to the rear end of the pseudo towed receiver 18 coupled to the vibration damper 2 as indicated by the arrow B.
n will be added in the direction.
この張力Ｔは、第２図における曳航型受波器１が海水中
を曳航さするときに生じる抵抗力や表面粘性力によって
加えらｎる力であって、次式で表わされる。This tension T is a force applied by the resistance force and surface viscosity force generated when the towed wave receiver 1 in FIG. 2 is towed through seawater, and is expressed by the following equation.
Ｔ ＝ −ρｃｎＡＶ ＋−ｐｃｔｓＶ２２′２
ここで、ρ：海水の流体密度
ＣＤ：曳航型受波器の抗力係数
Ｃｆ ： Ｉ 表面粘性係数Ａ二
流向投影面積
Ｓ二 表面積
Ｖ：曳航速度
このように張力Ｔは曳航速度によって変化するので、振
動減衰器２の特性の試験を行う場合、曳航速度を想定し
て張力Ｔを定め、重錘２０の重量を設定する。T = -ρcnAV +-pctsV22'2 where, ρ: Seawater fluid density CD: Drag coefficient of towed receiver Cf: I Surface viscosity coefficient A2
Flow direction projected area S2 Surface area V: Towing speed In this way, the tension T changes depending on the towing speed, so when testing the characteristics of the vibration damper 2, the tension T is determined assuming the towing speed, and the Set the weight.
次に上述した構成の作用を説明する。Next, the operation of the above-described configuration will be explained.
まず、第１図に示した状態に振動減衰器２をセットし、
油圧源１４を駆動すると、この油圧源１４に接続さｎた
シリンダ１５内のピストン１６が往復移動する。このピ
ストン１６には連結材１７を介シてピストンロッド１３
が連結さｎておシ、従って該ピストンロッド１３は前記
ピストン１６と一体に矢印Ａ方向に往復運動し、こｆｌ
によフ振動減衰器２に振動が与えらする。First, set the vibration damper 2 in the state shown in Fig. 1,
When the hydraulic power source 14 is driven, a piston 16 in a cylinder 15 connected to the hydraulic power source 14 reciprocates. This piston 16 is connected to a piston rod 13 via a connecting member 17.
are connected to each other, so the piston rod 13 reciprocates in the direction of arrow A together with the piston 16.
Vibrations are applied to the vibration damper 2.
ここで、振動減衰器２の一端に立置する加速度計１０に
は前記ピストンロッド１３からの振動に 。Here, an accelerometer 10 placed vertically at one end of the vibration damper 2 receives vibrations from the piston rod 13.
よる加速度が直接伝達さｎ、また振動減衰器２の他端に
位置する加速度計１１には、該振動減衰器２を伝播した
振動による加速度が伝達されるので、この２つの加速度
計１０と１１のｆ直を計測器１２で測定して両者の直を
比較することによシ振動減衰器２の振動減衰特性を知る
ことができる。The acceleration caused by the vibration propagated through the vibration damper 2 is directly transmitted to the accelerometer 11 located at the other end of the vibration damper 2. The vibration damping characteristics of the vibration damper 2 can be determined by measuring the f-direction of the vibration damper 2 with the measuring device 12 and comparing the two values.
尚、このとき振動減衰器２には前記の如く擬似曳航型受
波器１８が連結さｎておシ、この擬似曳航型受波器１８
にはワイヤロープ１９を介して重錘２０の張力が矢印入
方向に与えられているため、振動減衰器２は実際の曳航
状態とほぼ同じ状態とな９、従って信頼性の高い試験結
果が得らｎる。At this time, the pseudo towing type receiver 18 is connected to the vibration damper 2 as described above, and the pseudo towing type receiver 18 is connected to the vibration damper 2 as described above.
Since the tension of the weight 20 is applied in the direction of the arrow through the wire rope 19, the vibration damper 2 is in almost the same state as the actual towing state9, and therefore highly reliable test results can be obtained. Ran.
また、油圧源１４を制御することによってピストンロッ
ド１３の往復運動による振動の振幅や周波数を変えたシ
、重錘２０の重量を変えることにより、振動減衰器２の
細部にわたる振動減衰特性を試験することが可能となる
。Further, by controlling the hydraulic power source 14 to change the amplitude and frequency of vibration caused by the reciprocating motion of the piston rod 13, and by changing the weight of the weight 20, the detailed vibration damping characteristics of the vibration damper 2 are tested. becomes possible.
以上説明したように、本発明は水または海水を入れた水
槽内に２個の加速度計を配置して、この両加速度計を振
動減衰器２の両端に取付け、この振動減衰器に振動を与
える振動付与手段を一方の加速度計に結合すると共に、
他方の加速度計には擬似曳航型受波器を連結して、この
擬似曳航型受波器を介して振動減衰器に張力を与える引
張手段を設けた構成としているため、船舶を使用するこ
となく船舶で曳航した場合とほぼ同じ条件で振動減衰器
の振動減衰特性を試験することが可能となシ、従来に比
べて非常に安価にかつ多数の人手をかけることなく、シ
かも短時間で試験を行うことができるという効果が得ら
ｎる。As explained above, in the present invention, two accelerometers are placed in a water tank containing water or seawater, and both accelerometers are attached to both ends of the vibration damper 2 to apply vibration to the vibration damper. A vibration imparting means is coupled to one of the accelerometers, and
The other accelerometer is connected to a pseudo-towing type receiver, and a tensioning means is provided to apply tension to the vibration damper via this pseudo-towing type receiver, so there is no need to use a ship. It is possible to test the vibration damping characteristics of a vibration damper under almost the same conditions as when being towed by a ship, and it is possible to test the vibration damping characteristics at a much lower cost and in a shorter time than before, without requiring a large number of personnel. The effect is that it is possible to perform the following.
また、前記振動付与手段は振動減衰器に与える振動の振
幅や周波数を変えることができ、かつ引張手段も張力を
変えることが可能であるため、こｎらによって加振条件
を種々変えることによシ詳細な減衰特性データが得ら几
るという効果もあシ、更に陸上で試験を行うことができ
るので安定した試験データが得ることができる。Furthermore, the vibration applying means can change the amplitude and frequency of the vibration applied to the vibration damper, and the tensioning means can also change the tension, so by variously changing the excitation conditions, it is possible to This method not only has the advantage of being able to obtain detailed damping characteristic data, but also allows testing to be conducted on land, making it possible to obtain stable test data.
第１図は本発明による振動減衰特性試験機の一実施例を
示す断面図、第２図は曳航型受波器と共に振動減衰器が
船舶によシ曳航さｎている状態を示す概略図である。
１：曳航型受波器 ２：振動減衰器 ３：船舶８：水槽
９：水または海水 １０，１１：加速！計 １２：計
測器 １３：ピストンロッド１４：油圧源 １８：擬似
曳航型受波器 １９：ワイヤロープ ２０：重錘
特許比 願人 沖電気工業株式会社
代理人 弁理士 金 倉 喬 二手続補正書（自
発）
昭和６０年９月４日
特許庁長官 宇 賀 道 部 殿
１、事件の表示
昭和６０年特許願 第０７５３５１号
２、発明の名称 振動減衰特性試験機３、補正をす
る者
事件との関係 特許出願人
住 所 東京都港区虎ノ門１丁目７番１２号名 称
（０２９）沖電気工業株式会社代表者 橋 本
南海男
４、代理人
５、補正命令の日付 自 発
７、補正の内容
１、明細書第３頁第８行目の「・・・を減衰する目的で
、」を「・・・を減衰させる目的で、」と補正する。Fig. 1 is a sectional view showing an embodiment of the vibration damping characteristic tester according to the present invention, and Fig. 2 is a schematic view showing the vibration damper being towed by a ship together with the towed receiver. be. 1: Towed receiver 2: Vibration damper 3: Ship 8: Water tank 9: Water or seawater 10, 11: Acceleration! Total 12: Measuring instrument 13: Piston rod 14: Hydraulic source 18: Pseudo towed receiver 19: Wire rope 20: Weight patent ratio Applicant: Oki Electric Industry Co., Ltd. agent Patent attorney Takashi Kanakura Second procedural amendment ( Spontaneous) September 4, 1985 Michibe Uga, Commissioner of the Patent Office 1. Indication of the case: 1985 Patent Application No. 075351 2. Title of the invention: Vibration damping characteristic testing machine 3. Person making the amendment: Relationship with the case. Patent applicant address: 1-7-12 Toranomon, Minato-ku, Tokyo Name (029) Oki Electric Industry Co., Ltd. Representative: Nankai Hashimoto 4, Agent: 5 Date of amendment order: Proprietor: 7, Contents of amendment: 1 , on page 3, line 8 of the specification, amend "for the purpose of attenuating..." to "for the purpose of attenuating...".
Claims (1)
器の振動減衰特性を知るための振動減衰特性試験機であ
つて、 曳航型受波器と同等の質量を持ちかつ振動減衰器の後端
に連結される擬似曳航型受波器と、この振動減衰器及び
擬似曳航型受波器を収容しかつこれらが水没するように
水または海水を入れた水槽と、 振動減衰器の前端から振動を与える振動付与手段と、 この振動付与手段により与えられた振動による加速度を
振動減衰器の両端で測定する加速度計と、 前記擬似曳航型受波器を介して振動減衰器に張力を与え
る引張手段とを備えていることを特徴とする振動減衰特
性試験機。[Scope of Claims] 1. A vibration damping characteristic tester for determining the vibration damping characteristics of a vibration damper attached to a towed wave receiver used underwater, which has a mass equivalent to that of the towed wave receiver. a pseudo-towed wave receiver connected to the rear end of the vibration damper; an aquarium containing water or seawater to accommodate the vibration damper and the pseudo-towed wave receiver so that they are submerged; a vibration applying means for applying vibration from the front end of the vibration damper; an accelerometer for measuring acceleration due to the vibration applied by the vibration applying means at both ends of the vibration damper; and vibration damping via the pseudo towed receiver. A vibration damping property testing machine characterized by comprising a tensioning means for applying tension to the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60075351A JPS61234331A (en) | 1985-04-11 | 1985-04-11 | Vibration damping characteristic tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60075351A JPS61234331A (en) | 1985-04-11 | 1985-04-11 | Vibration damping characteristic tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61234331A true JPS61234331A (en) | 1986-10-18 |
| JPH031611B2 JPH031611B2 (en) | 1991-01-11 |
Family
ID=13573733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60075351A Granted JPS61234331A (en) | 1985-04-11 | 1985-04-11 | Vibration damping characteristic tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61234331A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101318904B1 (en) * | 2013-03-25 | 2013-10-16 | 한국기계연구원 | Horizontal and vertical load excitation device for offshore structures and endurance test device with the same and endurance test methods |
| CN110118652A (en) * | 2019-05-31 | 2019-08-13 | 株洲时代新材料科技股份有限公司 | Overhead monorail vehicle workshop damper load testing machine and method |
| CN110907108A (en) * | 2019-12-04 | 2020-03-24 | 重庆大学 | Damping test model for liquefied natural gas storage tank |
-
1985
- 1985-04-11 JP JP60075351A patent/JPS61234331A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101318904B1 (en) * | 2013-03-25 | 2013-10-16 | 한국기계연구원 | Horizontal and vertical load excitation device for offshore structures and endurance test device with the same and endurance test methods |
| CN110118652A (en) * | 2019-05-31 | 2019-08-13 | 株洲时代新材料科技股份有限公司 | Overhead monorail vehicle workshop damper load testing machine and method |
| CN110907108A (en) * | 2019-12-04 | 2020-03-24 | 重庆大学 | Damping test model for liquefied natural gas storage tank |
| CN110907108B (en) * | 2019-12-04 | 2020-10-09 | 重庆大学 | Damping test model for liquefied natural gas storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH031611B2 (en) | 1991-01-11 |
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