V BÜKMEDE GERİ ESNEME DAVRANIŞLARI

YUNUS ASLAN, İbrahim KARAAĞAÇ
1.852 2.194

Öz


Geri esneme, ürüne kalıplama sırasında verilen şekil ile kalıplama sonrası elde edilen şekil arasındaki fark olup, genellikle sac metal bükme işlemlerinde karşılaşılan önemli bir şekil verme problemidir. V Bükmede, malzeme parametreleri (malzeme türü, kalınlık, anizotropi, akma dayanımı, Young modülü, pekleşme vb.), proses parametreleri (ütüleme süresi, bükme sıcaklığı, sürtünme, bükme kuvveti vb.) ve kalıp parametreleri (bükme açısı, bükme radyüsü vb.) gibi çok sayıda parametrenin dikkate alınması gerekmektedir. Bu nedenle; malzeme, proses ve kalıp parametrelerinin göz önünde bulundurulduğu çok sayıda deneysel ve sonlu elemanlar yöntemleriyle bilgisayar destekli sayısal analiz çalışmaları yapılmıştır. Bu çalışmada, V bükme sonrası şekillendirilen parçalarda meydana gelen geri esneme davranışları ile ilgili yapılmış olan çalışmalar derlenmiş ve değerlendirilmiştir.


Anahtar kelimeler


Geri esneme, V bükme, bükme kalıpları

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