Mehmet FIRAT

12646

Çevrimsel Malzeme Deformasyonlarının Modellenmesi Bölüm I Plastisite Bünye Modelleri

Makina parçaları ve yapı elemanların tasarımında; temel mühendislik faaliyetleri, statik ve dinamik yüklemeler altında oluşan gerilme ve gerinimlerin hesaplanması, ve belli bir güvenlik kriterine göre malzeme seçiminden geometrik ölçümlendirmeye kadar olan bir dizi tasarım kararının alınması olarak ifade edilebilir. Gerek bilgisayar ortamında değişik sayısal yöntemler kullanılarak yapılan değerlendirmeler ve gerekse protiplendirme esnasında uygulanan değişik doğrulama testleri, yapısal deformasyonların gerinim ve gerilme değerleriyle ilişkilendirme gereksinimi mevcuttur. Bu amaçla yapılacak tüm mühendislik faaliyetleri değişen oranlarda malzeme bünye modellerinin kullanılması ihtiyacını ortaya çıkarmaktadır. Bu sebeple tasarım araçlarını kullanan mühendisler açısından malzeme modelleme bilgisi giderek artan bir önem ifade etmektedir. Bu makalede, tipik mühendislik metallerinin çok-eksenli çevrimsel dinamik yüklemeler altında deformasyonlarının benzetimine yönelik literatürde önerilen bünye modelleri incelenecektir. 
Anahtar Kelimeler:

Çok Eksenli Çevrimsel Yükleme, Kinematik Peklesme, Plastik Bünye Denklemi

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Makina Tasarım ve İmalat Dergisi-Cover
  • ISSN: 1302-9487
  • Başlangıç: 1986
  • Yayıncı: Makina Tasarım ve İmalat Derneği
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