1.제 목 : Analysis of Hydrostatic Tube Bulging with Cylindrical Die


Using Static Explicit FEM





2. 연 사 : Takayuki HamaDepartment of Mechanical Engineering, Waseda University, Tokyo, JapanIntegrated Volume-CAD System Program, The Institute of Physical and Chemical Research-RIKEN, Saitama, Japan








3. 일 시 : 2004년 8월 10일 화요일 오전 10시 ~





4. 장 소 : 301동 1512호 세미나실





5. 내 용 :


Tube Hydroforming (THF) is getting an increasing amount of attention in industry. THF has advantages such as weight reduction, high dimensional accuracy, and high rigidity. However, this forming process requires precise control of internal pressure and axial feeding. Additionally, in most cases prebending processes is influenced by the outcome of this prebending process. We describe the development of the Finite Element Method (FEM) code for THF analysis and a comparison of experimental and analytical results. The elastoplastic FEM code for THF analysis has been developed based on ITAS3D which is a sheet metal forming simulation program using the static explicit method. The algorithm of hydraulic pressure has been newly implemented in ITAS3D. Hydrostatic copper tube bulging with a cylindrical die was calculated with the code, and analytical results show good agreement with the experimental ones.


In this calculation, there is only a very small difference between the solid element and shell element results.





6. 문 의 : 기계항공공학부 오수익 교수 (☏880-7151)