第3期 唐寿高等：粘塑性分析的复变边界积分方程解 299 Complex Boundary Integral Equation Solution for Viscoplastic Analysis Tang Shougao Cao Zhiyuan (Department of Engineering Mechanics and Technology,Tongji University,Shanghai,200092) Abstract In this paper,a general formulation of complex boundary integral equation for 2D viscoplastic problein based on initial strain rates is presented.And complex BEM analysis,which takes the constitutive model due to Hart as an example,is carried out.Compared with conventional BEM,there are some advantages of the present method such as simplicity and unification of formulations,simplification and general purpose of computer program,and being independent of fundamental solutions,etc.As suitable complex fundamental solutions which satisfy the boundary conditions on some part of the boundary and therefore no discretization is necded over that boundary can be chosen,more accurate results can be expected by employing less boundary elements. Keywords Viscoplasticity;Complex variables;Boundary integral equation JC0C04C0C3+C0C0C3+C3C3+C3G000CO0J+C3C3*C300C3C3C0G3C000+GC0C3C0303G0+C3C3+C0C0004C0+C0+C0C 下期文章 挠性转子系统振动时延控制研究 摘要预报 汪海航吴启迪汪希背 研究参数不确定转子系统振动时延控制器的设计方法.首先提出时延控制方法的基本 思想，导出了转子系统时延控制算法，然后提出了电磁阻尼器时延控制器的设计准则和参数 选择方法，最后给出了相应的算例。 城市与工程GPS网数据处理的一种新方法 姚连瞳 提出了城市与工程GP$网数据处理的一种新方法，通过实例计算验证了该方法的正确 性。 ?1994-2017 China Academic Journal Electronic Publishing House.All rights reserved.http://www.cnk第 期 唐寿高等 3 : 粘塑性分 析的复变边界积分方程解 9 9 2 C o m l e B o x P n u d a r I n e g r a l E t y q a u i o n S o l t u i o t n f o r i V e o s l a P s i c A n a l t y s i s a ng T S h o ng a o C a o Z h t y a n u ( D e p a r m t e n t o f E n g in e e r in g M e e h a n i e a n s d T e e h n o l o g y , T o n gj i U n i v e r s i ty , S h a n g h a i , 2 0 0 9 2 ) A b s t r a c t I n t h i s P a P e r , a g e n e r a l fo r m u l a t i o n o f e o m P l e x b o u n d a r y i n t e g r a l e q u a t i o n fo r Z D v i s e o P l a s t i e P r o b l e l n b a s e d o n i n i t i a l s t r a i n r a t e s 1 5 P r e s e n t e d . A n d e o m P l e x B E M a n a l y s i s , w h i e h t a k e s t h e e o n s t i t u t i v e m o d e l d u e t o H a r t a s a n e x a m P l e , 1 5 e a r i e d o u t . C o m P a r e d w it h e o n v e n t i o n a l B E M , t h e r e a r e s o m e a d v a n t a g e s o f t h e P r e s e n t m e t l i o d s u e h a s s 加 Pl i e it y a n d u n iif e a t i o n o f fo mr u l a t i o n s , s i m P I戈if e a t i o n a n d g e n e r a l P u rp o s e o f e o m p u t e r P r o g r a m , a n d b e i n g i n d e P e n d e n t o f fu n d am e n t a l s o l u t i o n s , e t e . A s s u i t a b l e e o m Pl e x fu n d a m e n t a l s o l u t i o n s w h i e h s a t i s 勿 t h e b o u n d a r y e o n d it i o n s o n s o m e P a r t o f t h e b o u n d a r y a n d t h e r e fo r e n o d i s e r e t i z a t i o n 1 5 n e e d e d o v e r t h a t b o u n d a yr e a n b e e h o s e n , m o r e a e e u r a t e r e s u lt s e a n b e e x P e e t e d b y e m Pl o y i n g l e s s b o u n d a r y e l e m e n t s . K e y w o r d s V i s e o P l a s it e it y ; C o m P l e x v a r i a b l e s ; B o u n d a r y i n t e g r a l e q u a t i o n 〕 心〕 心〕 心〕 心〕 C ) C ) C 加C 挠性转子 系统振动时延控制研究 汪海航 吴启迪 汪 希聋 研究参数不确定转子 系统振动 时延控制器 的设计方法 . 首先提 出时延控制方法的基本 思 想 , 导出了转子系统时延控制算法 , 然后提 出了电磁阻尼 器时延控制器的设计准则和参数 选择方法 , 最后给出了相应的算例 . 城市与工程G p S 网数据处理的一种新方法 姚连璧 提出了城市与工 程G P S 网数据处理 的一种新方法 , 通过实例计算脸证 了该方法的正 确 性