感谢学shang霸di!Non-rigid body oscillation 真可怕
其实不是对时间的导数,是对位移的
Bending moment = E*I*(shear force)*(curvature) = E*I*(shear force)*(deflection)'' = E*I*(lateral load )*(deflection)''' = - E*I*(deflection)''''
其实不是对时间的导数,是对位移的
Bending moment = E*I*(shear force)*(curvature) = E*I*(shear force)*(deflection)'' = E*I*(lateral load )*(deflection)''' = - E*I*(deflection)''''