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1. |
What is the correct form of the principle of virtual displacements applied to plane finite elastic element If Ve is the volume of element and se is its surface? |
A. | 0=\(\int_{V_e}\)(σijδεij+ρüiδui)dV-\(\int_{V_e}\)fiδuidV-∮se\(\hat{t_i}\)δuids |
B. | 0=\(\int_{V_e}\)(σijδεij+ρu̇iδui)dV-\(\int_{V_e}\)fiδuidV-∮se \(\hat{t_i}\)δuids |
C. | 0=\(\int_{V_e}\)(σijδεij+ρüiδui)dV+\(\int_{V_e}\)fiδuidV-∮se \(\hat{t_i}\)δuids |
D. | 0=\(\int_{V_e}\)(σijδεij+ρu̇iδui)dV\(\int_{V_e}\)fiδuidV+∮se \(\hat{t_i}\)δuids |
Answer» B. 0=\(\int_{V_e}\)(σijδεij+ρu̇iδui)dV-\(\int_{V_e}\)fiδuidV-∮se \(\hat{t_i}\)δuids | |