Relation between limiting drawing ratio and plastic strain ratio

1984 ◽  
Vol 3 (8) ◽  
pp. 677-680 ◽  
Author(s):  
Dong Nyung Lee
Keyword(s):  
Plastic Strain ◽  
Strain Ratio ◽  
Drawing Ratio ◽  
Plastic Strain Ratio ◽  
Limiting Drawing Ratio

scholarly journals ANALISIS PROSES DRAWING UNTUK PEMBUATAN PEDAL BRAKE SEPEDA MOTOR RODA TIGA DENGAN SOFTWARE BERBASIS FEM

2018 ◽  
Vol 9 (1) ◽  
pp. 335-346
Author(s):  
Norman Iskandar ◽  
Deni Fajar Fitriyana ◽  
Fuad Arief Raharjo
Keyword(s):  
Plastic Strain ◽  
Strain Ratio ◽  
Drawing Ratio ◽  
Plastic Strain Ratio ◽  
Limiting Drawing Ratio

Pedal Brake berfungsi sebagai tempat pijakan kaki pada sistem pengereman pada salah satu produk motor roda tiga di Indonesia. Pembuatan pedal brake menggunakan proses drawing yaitu proses dimana gaya diberikan pada benda kerja agar terdeformasi plastis mengikuti bentuk dari punch dengan kedalaman tertentu. Dalam pembuatan pedal brake menggunakan proses drawing terdapat potensi cacat yang bisa terjadi akibat  besarnya gaya  serta tingkat  kedalaman cetakan.  Analisa  draw ability  dilakukan untuk mengetahui seberapa besar kedalaman proses drawing sebelum benda kerja mengalami kegagalan dengan menghitung nilai Limiting Drawing Ratio (LDR) dan rata-rata plastic strain ratio (Ravg). Simulasi dilakukan untuk mengetahui parameter seperti gaya pembentukan, jumlah energi yang digunakan beserta potensi cacat yang timbul pada pedal brake seperti earing dan kegagalan pada saat melakukan proses drawing. Dari hasil perhitungan LDR sebesar 1,028 dan Ravg  sebesar 2,8 untuk jenis material ST-37 menunjukkan bahwa kemampuan draw ability yang rendah dengan gaya pembentukan maksimum sebesar 92,8 kN dan energi yang diserap sebesar 0,69 kJ. Nilai Ravg sebesar 1,2 untuk jenis material ST-37 cukup besar sehingga potensi terjadinya earing tidak terlalu nampak untuk proses drawing. Perbandingan antara analisa teoritis dan simulasi memiliki error sebesar 6% sehingga hasil masih dapat dikatakan valid.

Effect of Cu Content on the Formability and Portevin-Le Chatelier Effect of Al-Mg Alloys

2015 ◽  
Vol 817 ◽  
pp. 150-157
Author(s):  
Peng Cheng Ma ◽  
Di Zhang ◽  
Lin Zhong Zhuang ◽  
Ji Shan Zhang
Keyword(s):  
Plastic Strain ◽  
Stress Drop ◽  
Strain Ratio ◽  
Mg Alloys ◽  
Dynamic Strain ◽  
Strain Hardening Exponent ◽  
Drawing Ratio ◽  
Plastic Strain Ratio ◽  
Cu Content ◽  
Al Mg Alloys

Al-Mg alloys developed for auto body sheets with different Cu contents were fabricated in the laboratory scale. The effects of Cu content on the microstructures, formability and Portevin–Le Chatelier(PLC) effect of the alloys were investigated by polarizied optical microscopy and room temperature tensile testing. It has been found that with increasing Cu content, there was little change of the strain hardening exponent, but the plastic strain ratio and limiting drawing ratio increased firstly and then decreased. A quantitative statistical analysis of the characteristics of the PLC effect was made, including the stress drop and the reloading time, which follow a common linear relationship with plastic strain, and the increase rate of stress drop and reloading time was bigger with more Cu content. A detailed discussion of the corresponding mechanism of Cu and Cu-containing precipitates on the dynamic strain aging(DSA) was made.

Determining Plastic Strain Ratio of Sheet Metal Based on Stereo Vision

2010 ◽  
Vol 30 (12) ◽  
pp. 3515-3523
Author(s):  
叶南 Ye Nan ◽  
张丽艳 Zhang Liyan
Keyword(s):  
Plastic Strain ◽  
Sheet Metal ◽  
Stereo Vision ◽  
Strain Ratio ◽  
Plastic Strain Ratio

scholarly journals The Plastic Strain Ratio of Single Crystals of Low Carbon Steel

1964 ◽  
Vol 5 (4) ◽  
pp. 244-247 ◽  
Author(s):  
Shin’ichi Nagashima ◽  
Shozo Sekino ◽  
Hiroshi Kato
Keyword(s):  
Carbon Steel ◽  
Plastic Strain ◽  
Single Crystals ◽  
Low Carbon Steel ◽  
Strain Ratio ◽  
Low Carbon ◽  
Plastic Strain Ratio
Sign in / Sign up

Export Citation Format

Share Document