In the weak form of the principle of virtual displacements applied to a plane elastic finite element, what does the term ( int_{V_e} )( u i ui)dV correspond to?

Virtual work done by the body force

Virtual work done by the surface traction

In the weak form of the principle of virtual displacements applied to

1.	In the weak form of the principle of virtual displacements applied to a plane elastic finite element, what does the term ( int_{V_e} )( u _i u_i)dV correspond to?
A.	Virtual strain energy
B.	Kinetic energy
C.	Virtual work done by the body force
D.	Virtual work done by the surface traction
Answer» C. Virtual work done by the body force

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In the weak form of the principle of virtual displacements applied to a plane elastic finite element, what does the term ( int_{V_e} )( u i ui)dV correspond to?

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In the weak form of the principle of virtual displacements applied to a plane elastic finite element, what does the term ( int_{V_e} )( u _i u_i)dV correspond to?