【摘要】 本文在求解三维弹性静力摩擦接触问题的有效方法-非光滑方程组方法的基础上,通过能够近似满足动量、动能守恒条件的速度、加速度的修正方法,将该方法推广到动力接触问题的求解中,以考虑地震时拱坝中横缝的开合、错动对坝体动力响应的影响。同时文中采用由多次透射公式表示的人工边界条件来考虑坝-基动力相互作用的影响。数值算例中分析了横缝的数目和布置位置对拱坝动力响应的影响。更多还原

【Abstract】 In this paper, the dynamic contact problem resulted from sticking, separate and sliding occurred in the contraction joints is simulated by the non-smooth equation method combined with the consideration of the balance of momentum and kinetic energy at the current of impact. The artificial boundary condition expressed by multi-transmitting formula is adopted to simulate the propagation of the scatter wave to the infinite. Implicit-explicit integration scheme is used for the equilibrium equation of the arch dam-foundation system. The effects of the number and position of the contraction joints on the dynamic response of arch dam are studied.更多还原