SU624257A1 - Educational dynamic model on building mechanics - Google Patents
Educational dynamic model on building mechanicsInfo
- Publication number
- SU624257A1 SU624257A1 SU752303424A SU2303424A SU624257A1 SU 624257 A1 SU624257 A1 SU 624257A1 SU 752303424 A SU752303424 A SU 752303424A SU 2303424 A SU2303424 A SU 2303424A SU 624257 A1 SU624257 A1 SU 624257A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- model
- truss
- educational
- loss
- stability
- Prior art date
Links
Landscapes
- Instructional Devices (AREA)
Description
(54) УЧЕБНО-ДИНАМИЧЕСКАЯ МОДЕЛЬ ПО СТРОИТЕЛЬНОЙ МЕХАНИКЕ(54) EDUCATIONAL DYNAMIC MODEL ON CONSTRUCTION MECHANICS
Изобретение относитс к области учеё ных пособий и может.быть использовано при изложении раздела Устойчивостьв курсе строительной механики.The invention relates to the field of study guides and can be used in the presentation of the section Sustainability in the course of structural mechanics.
Известна учебно- диналдаческа модель по строительной механике,содержаща шарнирно соединенные между собой стерж ни с упругими элементами, опирающиес на цилиндрические опоры, не может демонстрировать потерю устойчивости модели в своей плоскости по кососимметрической безизгибной форме.A known educational model on structural mechanics, containing hinged rods with elastic elements supported on cylindrical supports, cannot demonstrate a loss of stability of the model in its plane in an obliquely symmetrical bending shape.
Целью изобретени вл етс демонстраци потери устойчивости в своей плоскости по .кососимметрическойбезы&П1бной форме.The aim of the invention is to demonstrate the loss of stability in its plane according to a cososymmetric bezess &
Цель достигаетс тем, что пилиндри- ческие опоры закреплены неподвижно, а стержни образуют между собой угол, меньший45° .The goal is achieved by the fact that the pilind supports are fixed, and the rods form an angle of less than 45 ° between them.
На фиг. 1 изображена схема предла гаемой модели, на фиг. 2 - то же, разрез по А-А. °FIG. 1 is a diagram of the proposed model; FIG. 2 - the same, section along AA. °
Модель фермы состоит из двух omna-t ковых стержней 1, соединенных междуThe truss model consists of two omna-t crank bars 1 connected between
собой цилиндрическим шарниром 2, ось которого 3 используетс дл навешивани набора грузов (фиг. 1 и 2).a cylindrical hinge 2, the axis of which 3 is used for hanging a set of weights (Fig. 1 and 2).
Стержни 1 фермы снабжены упругими пружинными элементами 4 бпагодар ко торым значительно уменьшаетс продольна жесткость стержней. Упругий элемен 4 состоит, например, из пружинки сж& ти , изгибу которой преп тствует жес. кий стеркень, расположенный внутри пружинки по ее оси.The rods 1 of the truss are provided with elastic spring elements 4 bpodar which significantly reduces the longitudinal stiffness of the rods. The resilient element 4 consists, for example, of a coil spring & te, which is prevented from bending by the ladies. cue stubbing located inside the spring along its axis.
Угол ей между степжн ми 1 должен быть меньше, чем 45 . Обе опоры модели фермы представл ют собой неподвижные цилиндрические шарниры 5.The angle between steps 1 must be less than 45. Both supports of the truss model are fixed cylindrical hinges 5.
Демонстраци на предлагаемом приборе проводитс в следующей последователь ности.The demonstration on the proposed instrument is carried out in the following sequence.
Демонстрируют устойчивое положение равновеси фермы при. нагрузке Р меньшей , чем критическа сила при кососимметричной форме потери устойчивостиDemonstrate a stable equilibrium position of the farm at. load P is less than the critical force with an antisymmetric form of buckling
КРПри этом загруженный узел 2 фермыKRP When this loaded node 2 farm
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752303424A SU624257A1 (en) | 1975-12-22 | 1975-12-22 | Educational dynamic model on building mechanics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752303424A SU624257A1 (en) | 1975-12-22 | 1975-12-22 | Educational dynamic model on building mechanics |
Publications (1)
Publication Number | Publication Date |
---|---|
SU624257A1 true SU624257A1 (en) | 1978-09-15 |
Family
ID=20641969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752303424A SU624257A1 (en) | 1975-12-22 | 1975-12-22 | Educational dynamic model on building mechanics |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU624257A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102346982A (en) * | 2010-08-03 | 2012-02-08 | 王富民 | Structural stability test apparatus |
-
1975
- 1975-12-22 SU SU752303424A patent/SU624257A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102346982A (en) * | 2010-08-03 | 2012-02-08 | 王富民 | Structural stability test apparatus |
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