【摘 要】
：
Structural topology optimizations are studied widely by various methods [1-4].In this paper, a topology optimization method of space structures with stress constraints under multiple load cases based
【机 构】
：
College of Civil Engineering, Huaqiao University 361021, Ximen, China
【出 处】
：
7th China-Japan-Korea Joint Symposium on Optimization of Str
论文部分内容阅读
Structural topology optimizations are studied widely by various methods [1-4].In this paper, a topology optimization method of space structures with stress constraints under multiple load cases based on truss-like continuum material model was presented.The space truss-like continuum material model was established.It is assumed that there was infinite number of members along three isotropic orientations at any point.The elastic matrix along material principal axis was assumed as D(t,0)=E·diag[t1 t2 t3 (t2+t3)/4 (t3+t1)/4 (t1+t2)/4],where ti is the densities of members, E elastic model.The stiffness matrix was derived as, K=∑j∑e∈Sj3∑b=1tbj∑gr(nbj)Herj,where Herj is constant matrix, gr (nbj) the function of direction nbj of member at nodej.
其他文献
This study investigated the reliability based robust design of filament-wound composite pressure vessel with metallic liner.The geodesic shape of the dome was first obtained by netting analysis.Based
The stiffened plate is an important class of structures in various engineering applications.And also it is useful in industry because it can be easily improved the mechanical properties of a structure
This paper proposes a robust topology optimisation (RTO) methodology for minimizing both the expected compliance and the variance given arbitrarily distributed uncertain loading conditions.However, su
A physics-based reliability approach calculates the probability of failure by integrating the joint probability density of the basic random variables over the failure region.The failure region is defi
The linkage systems have high reliability so that they are preferred as motion-transferring elements for repetitive work.For example, the steering and engine crank systems of an automobile are compose
Mobile Harbor (MH) recently proposed by KAIST is a novel maritime cargo transfer system that can go out to a container ship anchored in the deep sea and handle containers directly at sea with the aid