三维块单元惯性释放方法研究  

Research on Inertia Relief Method of 3D Solid Element

作　　者：王宇帆 刘虓[1] 陈超核[1] WANG Yufan;LIU Xiao;CHEN Chaohe(South China University of Technology,Guangzhou 510640)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《广东造船》2022年第5期16-19,30,共5页Guangdong shipbuilding

基　　金：国家自然科学基金资助项目(51979111)。

摘　　要：惯性释放方法是商用有限元软件MSC、ANSYS、ABAQUS中的一项高级应用,被广泛应用于船舶、航空、汽车领域。但关于它的算法研究和程序实现,国内学者少有研究,根据加速度计算单元节点惯性力是实现该方法的一大难点。本文根据能量原理,在国内首次提出了三维块单元节点惯性力的计算方法,并编写了相应的惯性释放有限元程序。在本文算例中,先用弹性力学典型解验证了本文方法的可靠性,再以某导管架平台组装件为例对其进行了吊装过程中的强度分析,计算结果还与ANSYS进行了对比,验证了本文方法的可靠性和工程适用性。The inertia relief algorithm is an advanced application in the commercial finite element software MSC,ANSYS and ABAQUS.It is widely used in the fields of aerospace,shipping,and automobiles.However,domestic scholars have rarely studied its algorithm research and program implementation.Calculating the inertial force of the element node based on the acceleration is a major difficulty in the realization of this algorithm.Based on the energy principle,this paper presents the calculation method of the inertial force of the 3D solid element node for the first time in China,and writes the corresponding inertia relief finite element program.In the calculation example,the elasticity theory solution is used to verify the reliability of the method in this,then an assembly of jacket platform is used as an object to calculate its strength distribution during the hoisting process,and the calculation results are compared with ANSYS,which verified the reliability and engineering applicability of the research methods used in this paper.

关 键 词：惯性释放 块单元 结构强度 有限元 

分 类 号：U661.43[交通运输工程—船舶及航道工程]