An imperfect EEP element model is formulated by using the principle of stationary total potential energy, for simulating directly the effects of imperfection on structures and stiffness.

• 建立了具有初始弯曲几何缺陷的EEP单元模型,用势能原理推导了刚度方程,可以直接模拟构件的初始弯曲对构件本身性能的影响。