Finite element simulation of the punchless piercing process with Lemaitre damage model

被引:30
作者
Lee, SW [1 ]
Pourboghrat, F
机构
[1] Soonchunhyang Univ, Dept Mech Engn, Asan 336745, Chungnam, South Korea
[2] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA
关键词
stress integration; punchless piercing process; VUMAT; ductile failure;
D O I
10.1016/j.ijmecsci.2005.06.009
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The punchless piercing is a process that uses highly pressurized fluid instead of the conventional punch to make holes into the sheet metal. This process has many advantages over the conventional method for piercing various shaped holes into very thin strips of metal, composite, etc. An important cost advantage comes from not having to use a punch. Another important advantage comes from the top quality of pierced holes produced by punchless piercing, as no secondary finishing process will be needed for removing burrs typically found in conventional cutting processes. The ABAQUS/Explicit FEM code coupled with Lemaitre damage model has been used to more precisely characterize the punchless piercing process of a copper sheet. The formulation adopted for this purpose uses an established and efficient stress integration algorithm and development of a user material subroutine (VUMAT). For verification, the computed results have been compared with those of the experimental results in the literature and shown to be in good agreement with each other. The results obtained from this work are expected to be of significant interest to automotive and aerospace industries interested in using the punchless piercing process. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1756 / 1768
页数:13
相关论文
共 20 条
[1]   An investigation of tearing failure in fine-blanking process using coupled thermo-mechanical method [J].
Chen, ZH ;
Tang, CY ;
Lee, TC .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2004, 44 (2-3) :155-165
[2]   FRACTURE PREDICTION IN PLASTIC-DEFORMATION PROCESSES [J].
CLIFT, SE ;
HARTLEY, P ;
STURGESS, CEN ;
ROWE, GW .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1990, 32 (01) :1-17
[3]   Ductile fracture in metalworking: experimental and theoretical research [J].
Gouveia, BPPA ;
Rodrigues, JMC ;
Martins, PAF .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2000, 101 (1-3) :52-63
[4]   CONTINUUM THEORY OF DUCTILE RUPTURE BY VOID NUCLEATION AND GROWTH .1. YIELD CRITERIA AND FLOW RULES FOR POROUS DUCTILE MEDIA [J].
GURSON, AL .
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1977, 99 (01) :2-15
[5]   Fracture criteria identification using an inverse technique method and blanking experiment [J].
Hambli, R ;
Reszka, M .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2002, 44 (07) :1349-1361
[6]   Comparison between Lemaitre and Gurson damage models in crack growth simulation during blanking process [J].
Hambli, R .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2001, 43 (12) :2769-2790
[7]   Finite element simulation of fine blanking processes using a pressure-dependent damage model [J].
Hambli, R .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2001, 116 (2-3) :252-264
[8]  
JOHNSON GR, 1985, J ENG FRACT MECH, V21, P1
[9]  
KRIEG RD, 1977, ASME J PRESS VES TEC, V99, P510
[10]   A CONTINUOUS DAMAGE MECHANICS MODEL FOR DUCTILE FRACTURE [J].
LEMAITRE, J .
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1985, 107 (01) :83-89