本文選題：化學(xué)-力學(xué)耦合　切入點：耦合有限元法　出處：《計算力學(xué)學(xué)報》2016年05期

【摘要】：基于哈密頓原理,得到水凝膠的化學(xué)-力學(xué)耦合控制方程的等效積分形式和有限元形式。在整體坐標(biāo)系下推導(dǎo)出用形函數(shù)表示的化學(xué)-力學(xué)耦合應(yīng)變矩陣和單元剛度矩陣,并且得到在局部坐標(biāo)系下的離散化形式。結(jié)合ABAQUS軟件,編制了用戶單元子程序UEL,通過數(shù)值算例驗證了所開發(fā)單元的正確性,為在ABAQUS軟件中實現(xiàn)各種耦合問題的有限元UEL編程提供了參考依據(jù)。
[Abstract]:Based on the Hamiltonian principle, the equivalent integral form and the finite element form of the chemical-mechanical coupling governing equation of hydrogel are obtained.In the global coordinate system, the chemical-mechanical coupling strain matrix and the element stiffness matrix represented by shape function are derived, and the discretization form in the local coordinate system is obtained.Combined with ABAQUS software, the user unit subprogram UELL is compiled, and the correctness of the developed unit is verified by a numerical example, which provides a reference for the realization of finite element UEL programming for various coupling problems in ABAQUS software.
【作者單位】： 北京工業(yè)大學(xué)機械工程與應(yīng)用電子技術(shù)學(xué)院;河北工程大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金(11172012,11472020)資助項目
【分類號】：O341
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本文編號：1713321