CN103196747A - Teaching simulation test method of pure bending beam - Google Patents
Teaching simulation test method of pure bending beam Download PDFInfo
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- CN103196747A CN103196747A CN201310121077XA CN201310121077A CN103196747A CN 103196747 A CN103196747 A CN 103196747A CN 201310121077X A CN201310121077X A CN 201310121077XA CN 201310121077 A CN201310121077 A CN 201310121077A CN 103196747 A CN103196747 A CN 103196747A
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- beam body
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- pure bending
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Abstract
The invention provides a teaching simulation test method of a pure bending beam. The teaching simulation test method comprises the following steps of: simulating the transverse direction of a beam body by a combined rigid sheet and simulating the vertical direction of the beam body by a central sheet shaft; and carrying out loading test simulation of the pure bending beam at the outer side of a support through a stress application bent handle. The method utilizes a corresponding teaching model and is used for a teaching simulation test of the pure bending beam; and the teaching simulation test method has the advantages of simple structure, light weight, convenience in transportation, capability of being randomly demonstrated in fields of classrooms, laboratories and the like, high intuition, high working efficiency, no need of energy consumption, no generation of waste materials, zero pollution, zero energy consumption and low operation cost.
Description
Technical field
The present invention relates to a kind of pure bending beam teaching simulation test method.
Background technology
The pure bending beam test of prior art is according to entity beam body analysis of experiments result, and suitable muscle flexural member normal section bearing capacity has adopted fundamental assumption to calculate.Before the longitudinal tensile reinforcement stresses reaches yield strength and the moment that reaches, the mean strain in cross section meets plane cross-section assumption substantially, beam is after pure bending distortion, and its xsect still remains the plane, and as firm sheet around after certain horizontal rotational shaft one angle still with bending after the beam axis normal; Single load bearing supposition: establish beam and formed by many longitudinal fibers, when pure bending is out of shape, do not have laterally extruding between each fiber, only be subjected to unilateral stretching and the compression of fibre length direction.Experiment is the method that research beam body stress characteristic has cogency most, and the quantity of parameters during engineering is used at present and theory all return statistics through overtesting and obtain.Therefore experimental study is all indispensable approach of all researchs and practise area.And experimental study has the shortcoming of himself, need a large amount of instrument and equipments, and test result depends on the precision of instrument and equipment; Competency profiling to the test operation personnel is higher, must understand content of the test, method, step, points for attention and accident treatment etc. before the experiment; The analysis of experiment achievement depends on experience and the knowledge accumulation of testing crew; Test itself needs a large amount of funds to support, and needs enough test sites.These all are because the physical attribute of test is determined.For one of emphasis experiment in the civil engineering work teaching, pure bending beam stress performance replication experiment is the test that each specialty likens to.This experiment has above-mentioned defective equally, and many colleges and universities are limited to the shortage of funds, can't take into account all students.Its exist the test period long, expense is high, energy consumption is big, test back is destroyed the beam body and is difficult to dispose, beam body dead weight is big, is difficult to deficiencies such as transportation.
Through Chinese publication retrieval, the scheme identical with present patent application of not finding.
Summary of the invention
The objective of the invention is to, at the deficiencies in the prior art, propose a kind of pure bending beam teaching simulation test method.
Pure bending beam teaching simulation test method of the present invention is characterized in that: the beam body is laterally by the firm sheet simulation of combination, and the beam body loads for beam body afterburning simulation moment of flexure in the bearing outside by afterburning crank handle vertically by the simulation of center bobbin; It reaches the plane assumed conditions by the firm sheet of horizontal combination, to laterally make up firm sheet by longitudinal center's bobbin couples together and forms whole piece beam body, by the whole beam body of seat supports, apply symmetrical couple by afterburning crank handle when afterburning and make that the beam body is stressed to occur bending and deformation; The distortion of the xsect of beam body is observed in rotation by the firm sheet of horizontal combination, by the firm sheet of horizontal combination up and down the stretching each other of place, two ends with closed, the experimental demonstration process of observing the distortion of longitudinal section.
This method is used for class demonstration teaching and pilot demonstration teaching, makes the student can both participate in process of the test.
The present invention's beneficial effect compared with prior art:
1, simple in structure, directly perceived, practical, high efficiency.
2, can in the classroom, demonstrate, from heavy and light, convenient in carrying;
3, can produce in batches, expense is cheap, can carry out the experimentation demonstration to all classmates in the laboratory, and experiment does not need any energy consumption, does not produce waste material.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing, but embodiments of the present invention are not limited thereto.
Fig. 1---teaching mode structural representation.
Wherein: laterally make up firm sheet (1), longitudinal center's bobbin (2), sheet shaft stool (3), afterburning crank handle (4).
Embodiment
Pure bending beam teaching simulation test method of the present invention, for the beam body is laterally simulated by the firm sheet of combination, the beam body gives beam body afterburning simulation loading mode in the bearing outside by afterburning crank handle vertically by the simulation of center bobbin; It reaches the plane assumed conditions by the firm sheet of horizontal combination, to laterally make up firm sheet by longitudinal center's bobbin couples together and forms whole piece beam body, by the whole beam body of seat supports, apply symmetrical couple by afterburning crank handle when afterburning and make that the beam body is stressed to occur bending and deformation; The distortion of the xsect of beam body is observed in rotation by the firm sheet of horizontal combination, by the firm sheet of horizontal combination up and down the stretching each other of place, two ends with closed, the experimental demonstration process of observing the distortion of longitudinal section.
For example pure bending beam teaching simulation test method of the present invention is described further below in conjunction with the teaching mode accompanying drawing; Its teaching mode is as shown in Figure 1: the test teaching mode of pure bending beam teaching simulation test method of the present invention, it comprises the firm sheet of horizontal combination (1), longitudinal center's bobbin (2), bobbin two end bearings (3), afterburning crank handle (4).Its all parts all can adopt the material of prior art, the method manufacturing of adopting prior art or purchase acquisition; Its assembling can adopt prior art to finish.It laterally makes up firm sheet (1) and links together by longitudinal center's bobbin (2), longitudinal center's bobbin (2) two ends are connected with sheet shaft stool (3) respectively, support whole model by sheet shaft stool (3), add in the sheet shaft stool (3) at longitudinal center's bobbin (2) two ends outside and to be provided with afterburning handle (4) respectively, be used for to the model reinforcing.
Pure bending beam teaching simulation test method of the present invention, reach the plane assumed conditions by the firm sheet of horizontal combination, to laterally make up firm sheet by longitudinal center's bobbin couples together and forms whole piece beam body, by the whole beam body of seat supports, apply symmetrical couple by afterburning crank handle when afterburning and make that the beam body is stressed to occur bending and deformation.The distortion of the xsect of beam body is observed in rotation by the firm sheet of horizontal combination, by the stretching each other of place, two ends and the closed distortion of observing the longitudinal section up and down of the firm sheet of horizontal combination.Its experiment presentation process does not need large-scale instrument and equipment, energy source and power, does not need to be familiar with in advance experimental implementation step, points for attention etc., and therefore, experimental implementation is simple, low energy consumption, pollution-free, removable.
Pure bending beam teaching simulation test method of the present invention, its protection domain is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion to the present invention, and does not depart from the scope of the present invention and spirit.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (1)
1. pure bending beam teaching simulation test method is characterized in that: the beam body is laterally by the firm sheet simulation of combination, and the beam body is given beam body afterburning simulation moment of flexure loading in the bearing outside by afterburning crank handle vertically by the simulation of center bobbin; It reaches the plane assumed conditions by the firm sheet of horizontal combination, to laterally make up firm sheet by longitudinal center's bobbin couples together and forms whole piece beam body, by the whole beam body of seat supports, apply symmetrical couple by afterburning crank handle when afterburning and make that the beam body is stressed to occur bending and deformation; The distortion of the xsect of beam body is observed in rotation by the firm sheet of horizontal combination, by the firm sheet of horizontal combination up and down the stretching each other of place, two ends with closed, the experimental demonstration process of observing the distortion of longitudinal section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121077XA CN103196747A (en) | 2013-04-09 | 2013-04-09 | Teaching simulation test method of pure bending beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310121077XA CN103196747A (en) | 2013-04-09 | 2013-04-09 | Teaching simulation test method of pure bending beam |
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| Publication Number | Publication Date |
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| CN103196747A true CN103196747A (en) | 2013-07-10 |
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| CN201310121077XA Pending CN103196747A (en) | 2013-04-09 | 2013-04-09 | Teaching simulation test method of pure bending beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605169A (en) * | 2013-11-29 | 2014-02-26 | 河南理工大学 | Three-dimensional physical simulation experiment method of small-sized self-weight frame-type loading |
| KR101378262B1 (en) | 2013-12-11 | 2014-03-27 | 주식회사 리더스산업 | Simulation apparatus for experimenting structural mechanics |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU494762A1 (en) * | 1974-04-15 | 1975-12-05 | Training device on the resistance of materials | |
| JP2001183975A (en) * | 1999-12-27 | 2001-07-06 | Sekisui House Ltd | Model for relative learning of bending strength of reinforced concrete column |
| JP3682645B2 (en) * | 1999-12-17 | 2005-08-10 | 積水ハウス株式会社 | Bending deformation model |
| CN102053033A (en) * | 2009-11-04 | 2011-05-11 | 中国第一汽车集团公司 | Pure bending loading device for testing mechanical property |
| CN103208218A (en) * | 2013-04-09 | 2013-07-17 | 贺州学院 | Teaching model of pure bending beam test |
-
2013
- 2013-04-09 CN CN201310121077XA patent/CN103196747A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU494762A1 (en) * | 1974-04-15 | 1975-12-05 | Training device on the resistance of materials | |
| JP3682645B2 (en) * | 1999-12-17 | 2005-08-10 | 積水ハウス株式会社 | Bending deformation model |
| JP2001183975A (en) * | 1999-12-27 | 2001-07-06 | Sekisui House Ltd | Model for relative learning of bending strength of reinforced concrete column |
| CN102053033A (en) * | 2009-11-04 | 2011-05-11 | 中国第一汽车集团公司 | Pure bending loading device for testing mechanical property |
| CN103208218A (en) * | 2013-04-09 | 2013-07-17 | 贺州学院 | Teaching model of pure bending beam test |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605169A (en) * | 2013-11-29 | 2014-02-26 | 河南理工大学 | Three-dimensional physical simulation experiment method of small-sized self-weight frame-type loading |
| CN103605169B (en) * | 2013-11-29 | 2015-12-02 | 河南理工大学 | A kind of small-sized deadweight frame prestowage three-dimensional physical simulation experimental technique |
| KR101378262B1 (en) | 2013-12-11 | 2014-03-27 | 주식회사 리더스산업 | Simulation apparatus for experimenting structural mechanics |
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Application publication date: 20130710 |