In the numerical methods section , a finite element / control volume mold filling simulation , a tensor representation of fibre orientation and a finite element solution of the transient fibre orientation equations are combined in the program . the input data and output results are visualized by means of finite element software 程序中用有限單元控制體方法模擬模壓流動(dòng),用表征纖維取向的張量和有限元伽遼金方法來(lái)解決瞬時(shí)纖維取向方程,用計(jì)算機(jī)圖形原理編程實(shí)現(xiàn)對(duì)smc流動(dòng)軌跡、纖維取向分布的計(jì)算機(jī)模擬。
The inelastic finite element solution considering both large - deflection and plastic extension is used to analyze eccentric - loading columns in this paper . the stability capacity of different slendemess ration and eccentricity are calculated , the residual stresses and their influence upon the steel eccentric - loading columns are emphasizedly discussed , at the same time ten steel columns were achieved 本文采用大變形和塑性擴(kuò)展的兩重非線性有限元方法進(jìn)行偏心受壓柱子的全過(guò)程模擬,分析不同的長(zhǎng)細(xì)比、不同的偏心率情況下柱子的穩(wěn)定性能,并著重討論殘余應(yīng)力對(duì)柱子承載能力的影響,完成了10根試件的試驗(yàn)。
A new extrapolation multigrid method in solving large scale finite elemen system of equation is proposed , i . e . new extrapolation values of finite element solutions on the first two level grids are used to provide the good initial values on the third level grids and then an exacter finite element solution can be obtained by several cg - iterations 摘要提出一種求解大規(guī)模有限元方程組的新外推多網(wǎng)格法,即用前兩層網(wǎng)格上有限元的新外推值提供第3層細(xì)網(wǎng)格上的好初值,然后用幾次cg -迭代能得到較準(zhǔn)確的有限元解。