- 5 How To Increase The Accuracy Of The Element 1 In Principle Of Virtual Work The Virtual Displacements Are Assumed 1 (7.96 KiB) Viewed 9 times
- 5 How To Increase The Accuracy Of The Element 1 In Principle Of Virtual Work The Virtual Displacements Are Assumed 2 (44.64 KiB) Viewed 9 times
1) In principle of virtual work, the virtual displacements are assumed as small ( ). 2) The stiffness matrices of truss bar element, beam element and plane frame element are all symmetric ( ). 3) We can drop the constant term since it has no contribution to the strain energy ( ). 4) The generalized displacements can include both direct displacement and rotational displacement ( ). 5) The inverse of the element stiffness matrix, [*], always exist ().