|
|
Finite element analysis of a subsurface crack on the- Z# l/ }* t' [
interface of a coateh material under a moving
0 y, F; }. K J& ~compressive load& C3 g7 @' o9 ^ P5 a
117
7 Y3 d8 y7 `% p" qK S. Leea**, J. T. Jinn” and Y. Y. Earmmeb: ?" K& Y- L [
“Department of Mechanical Engineering, University of ULran, San 29, Mugeodong, Namgu, Ulsan; X% A+ Y% ?* S
Gyeongnam, 680-749 Seoul (Korea)
" T6 f& Z4 s" Y& `“Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology,
+ [) W7 V6 M/ K0 V0 j" n( OSeoul (Korea)& c) y; d5 v) E( G, w. K
(Received July 11, 1991; revised and accepted, October 30, 1991)) w5 n8 d" b% |) l8 }
Abstract9 L/ T# b( i+ i. S; g( D
A subsurface crack subjected to a moving compressive load is analysed with the finite
m1 p( M2 \ J0 H8 h+ o" o! ]element method (FEM) considering friction on the crack surface. By comparing the FEM
/ z, c a l! s5 S2 S A( f0 Jresults with semianalytic results of the subsurface crack in a homogeneous medium, it is
/ [* a& q! {3 v- I6 b. q5 kfirst verified that the present solution method gives a fairly good result. The fracture
5 Z; J" a% @$ ?, Gparameters for the subsurface crack on the interface of a coated material are then evaluated! a& h, T- b0 Q2 A9 `
numerically for various cases such as different combinations of materials of the coating
. H5 ^( ]0 u* Flayer and the substrate, changes in the ratio of the length of the subsurface crack to the: ]: n! I) T5 a; T
thickness of the coating layer and changes in the coefficient of friction on the crack surface.2 g0 Y. i% ?2 W2 ^9 D) M
The effects of the combination of materials, the geometry of the subsurface crack and the6 ]- `' C3 y: O' l k2 f) ?) u3 e
coefficient of friction on the fracture parameters are discussed. The conditions for the
. h3 \( q1 O* q5 @' `7 _% Ysubsurface crack to propagate along the interface or to kink out of the interface are also
# ?; @! l. g9 s, e" q/ vexamined. |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册
x
|
窥视卡
雷达卡
发表于 2005-12-29 21:07:58
显身卡
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
