Deformation of Trusses Model MT 032
Sci-tech Deformation of Trusses Model MT 032, the deformation of a single plane truss at one point is determined using Castigliano’s first theorem. The truss under investigation is made of bars joined together by a articulated construction using node discs. The trusses can be considered as ideal trusses. The bars have special snap-lock fixtures on their ends allowing them to be fixed easily into the node discs. A load application device attached to a node disc generates an external force.
The range of different bar lengths provided permits three forms of truss to be constructed. The bars are made of PVC, so their deformations are clearly visible.
Features
* Elastic deformation in a single plane truss1
* Construction of various truss forms1
* Application of Castigliano’s first theorem
When a component is placed under load it undergoes elastic deformation. This deformation can be calculated by determining elastic lines for example. Elastic lines describe the deformation of the complete component in the form of a mathematical equation. In reality, it is often only the deformation at specific points on the component which is of interest. Energy methods can be applied to determine these deformations more simply. Castigliano’s first theorem uses energy methods to calculate the deformation of a point on the component. The theorem is applicable to both statically determinate and indeterminate systems.
Sci-tech Deformation of Trusses Model MT 032, the deformation of a single plane truss at one point is determined using Castigliano’s first theorem. The truss under investigation is made of bars joined together by a articulated construction using node discs. The trusses can be considered as ideal trusses. The bars have special snap-lock fixtures on their ends allowing them to be fixed easily into the node discs. A load application device attached to a node disc generates an external force.
The range of different bar lengths provided permits three forms of truss to be constructed. The bars are made of PVC, so their deformations are clearly visible.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
- Elastic deformation of truss under point load
- Calculation of support reaction and bar forces
- Principle of work and strain energy
- Application of Castigliano’s first theorem to calculate the deformation at a defined point.
- Verification of the calculated deformation possible by the principle of virtual work
- Comparison of the deformations of different trusses under the same load
- Comparison of measured and calculated deformation
