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단조 해석 기술의 발전과 소성가공 산업의 변화   CAE 기술과 함께 성장한 대한민국 소성가공 산업 소성가공 기술은 한 국가의 산업 경쟁력을 가늠하는 핵심 지표로 여겨진다. 이 기술의 발전은 소재 산업 (제강, 비철금속, 압연, 인발, 열처리), 수요 산업 (자동차, 전자, 조선, 건설기계, 농기계), 기반 산업 (금형, 윤활, 자동화, 장비) 등 다양한 분야의 동반 성장을 이끌며, 기술력과…

4 Steps to Quickly Simulate Your Forging Process with Simulation Software orgers are in a situation today that they must be right, the first time. That too with the least amount of time and money. This means a simulation software to check your metal forming process is inevitable. And what if the forging simulation software…

Effect of friction laws on metal forming simulations – A summary – [2/2] In the previous article, effect of two friction formulations on three processes namely cylinder compression process with low aspect and contact ratio, cylinder compression process with high aspect and contact ratio and the hot strip rolling process were presented.…

Effect of friction laws on metal forming simulations – A summary – [1/2] The series of two articles, to be published in the coming weeks will be based on the effect offrictionformulation on the prediction of metal forming processes. In this article, effect of two friction formulations on three processes namely cylinder compression process with…

Bauschinger Effect in High-Strength Low-Strain-Hardening Materials – Post [1/2] In a series of 2 posts starting this week, the Bauschinger effect in high strength low-strain-hardening materials will be discussed. 1. Introduction It is noteworthy that cold-forged, high-strength materials or parts can often bypass heat treatment after being formed, which minimizes the amount of post-work due…

Effect of flow stress on finite element predictions of metal flow lines in forging In the previous article, it was mentioned that the relatively small dead metal region due to flow stress model employed may cause the difference, which gives us an idea with expectation that a lower limit of flow stress model, i.e., initial…

Finite element analysis of a tube swaging process Swaging process is a metal forming process for manufacturing various mechanical parts by changing cross-sections of rods, tubes and wires [1-10]. There are several advantages of the swaging. First, it is advantageous in mass producing straight or tapered metal shapes with various cross-sections including circle, square, gear…

Comparison of rigid-plastic and elasto-plastic finite element predictions of a tensile test of cylindrical specimens – Post 2  In this continuing post, the results of elastoplastic finite element analysis of the tensile test will be presented. The flow stress shown in Fig. 1, obtained by a material identification algorithm based on rigid-plastic finite element method,…

Comparison of rigid-plastic and elasto-plastic finite element predictions of a tensile test of cylindrical specimens – Post 1  Tensile test gives valuable information about finite element analysis and some criterion on its evaluation. It should be noted that tensile test can be not only used for acquisition of flow stress but it can be also…

Metal forming simulation with emphasis on metal flow lines using AFDEX software  There are so many kinds of failures occurring in developing metal forming processes, which are very costly and time-consuming. Under-filling or overlapping defects can be easily removed using the forging simulation software technologies. In many real situations, in fact, those defects can be…

Finite element analysis model of rotary forging for assembling wheel hubbearing assembly – Post 2/2  This post is in continuation with last week’s post on the finite element analysis model of rotary forging process of a wheel hub bearing assembly. Adding on to that introductory post, the details of the analysis model and the predictions…