Image stresses in a free-standing thin film

被引:31
作者
Hartmaier, A
Fivel, MC
Canova, GR
Gumbsch, P
机构
[1] Max Planck Inst Met Res, D-70174 Stuttgart, Germany
[2] Ecole Natl Super Phys Grenoble, GPM2, F-38402 St Martin Dheres, France
关键词
D O I
10.1088/0965-0393/7/5/310
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Three-dimensional discrete dislocation dynamics (DDD) has been used successfully to investigate different aspects of plasticity. An investigation of thin-film plasticity with the help of these DDD schemes requires detailed modelling of the interfaces and surfaces of the film. One possible method is to compensate for the normal stresses that a dislocation population exerts on a surface by appropriate point loads. This traction compensation method is extended to a free standing film, where the interaction of the two opposing free surfaces must be tal;en into account. The influence of the free surfaces on the operation of a Frank-Read source is investigated.
引用
收藏
页码:781 / 793
页数:13
相关论文
共 27 条
[1]  
Boussinesq J, 1885, Application des potentiels a l'etude de l'equilibre et du mouvement des solides elastiques
[2]   Strain softening, slip localization and propagation: From simulations to continuum modelling [J].
Brechet, Y ;
Canova, G ;
Kubin, LP .
ACTA MATERIALIA, 1996, 44 (11) :4261-4271
[3]   TEMPERATURE DEPENDENCE OF ELASTIC CONSTANTS OF CU AG AND AU ABOVE ROOM TEMPERATURE [J].
CHANG, YA ;
HIMMEL, L .
JOURNAL OF APPLIED PHYSICS, 1966, 37 (09) :3567-+
[4]   SIMULATIONS OF FOREST INTERACTIONS AND STRAIN-HARDENING IN FCC CRYSTALS [J].
DEVINCRE, B ;
KUBIN, LP .
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 1994, 2 (3A) :559-570
[5]   Three-dimensional simulation of dislocation-crack interactions in BCC metals at the mesoscopic scale [J].
Devincre, B ;
Roberts, SG .
ACTA MATERIALIA, 1996, 44 (07) :2891-2900
[6]   MODEL VALIDATION OF A 3D SIMULATION OF DISLOCATION DYNAMICS - DISCRETIZATION AND LINE TENSION EFFECTS [J].
DEVINCRE, B ;
CONDAT, M .
ACTA METALLURGICA ET MATERIALIA, 1992, 40 (10) :2629-2637
[7]  
DEVINCRE B, 1996, NATO ADV SCI INST E, V308, P309
[8]   SOME RELATIONS FOR STRAIGHT DISLOCATIONS [J].
DEWIT, R .
PHYSICA STATUS SOLIDI, 1967, 20 (02) :567-&
[9]  
FIVEL M, 1997, THESIS INP GRENOBLE
[10]   Three-dimensional modeling of indent-induced plastic zone at a mesoscale [J].
Fivel, MC ;
Robertson, CF ;
Canova, GR ;
Boulanger, L .
ACTA MATERIALIA, 1998, 46 (17) :6183-6194