Modeling of anisotropic plastic behavior of advanced high strength steel sheet TRIP 780

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Panich S., Uthaisangsuk V., Suranuntchai S., Jirathearanat S.

ผู้เผยแพร่: Trans Tech Publications

ปีที่เผยแพร่ (ค.ศ.): 2012

Volume number: 410

หน้าแรก: 232

หน้าสุดท้าย: 235

จำนวนหน้า: 4

ISBN: 9783037853160

นอก: 1022-6680

eISSN: 1662-8985

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84255195578&doi=10.4028%2fwww.scientific.net%2fAMR.410.232&partnerID=40&md5=42fbb80431c3ffbc9d9cf5526c55a920

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Anisotropic plastic behavior of advanced high strength steel sheet of grade TRIP780 (Transformation Induced Plasticity) was investigated using three different yield functions, namely, the von Mises's isotropic, Hill's anisotropic (Hill'48), and Barlat's anisotropic (Yld2000-2d) criterion. Uniaxial tensile and balanced biaxial test were conducted for the examined steel in order to characterize flow behavior and plastic anisotropy for different stress states. Especially, disk compression test was performed for obtaining balanced r-value. All these data were used to determine the anisotropic coefficients. As a result, yield stresses and r-values for different directions were calculated according to these yield criteria. The results were compared with experimental data. To verify the modelling accuracy, tensile tests of various notched samples were carried out and stress-strain distributions in the critical area were characterized. By this manner, the effect of stress triaxiality due to different notched shapes on the strain localization calculated by the investigated yield criteria could be studied.

คำสำคัญ

Anisotropy, Notched Samples, TRIP Steel, Yield Function