TAILIEUCHUNG - A recommendation of computation of normal streeses in single point incremental forming technology

The main aim of this paper is to examine ISEKI’s formula and to suggest a new analytical computation of three elements of stresses at any random point on the sheet work piece. The suggested formula is carefully verified by the results of Finite Element Method simulation. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 17, SOÁ K2- 2014 A recommendation of computation of normal streeses in single point incremental forming technology • Le Khanh Dien • Nguyen Thanh Nam • Nguyen Thien Binh DCSELAB, University of Technology, VNU-HCM (Manuscript Received on December 11th, 2013; Manuscript Revised March 18th, 2014) ABSTRACT: Single Point Incremental Forming (SPIF) has become popular for metal sheet forming technology in industry in many advanced countries. In the recent decade, there were lots of related studies that have concentrated on this new technology by Finite Element Method as well as by empirical practice. There have had very rare studies by pure analytical theory and almost all these researches were based on the formula of ISEKI. However, we consider that this formula does not reflect yet the mechanics of destruction of the sheet work piece as well as the behavior of the sheet in reality. The main aim of this paper is to examine ISEKI’s formula and to suggest a new analytical computation of three elements of stresses at any random point on the sheet work piece. The suggested formula is carefully verified by the results of Finite Element Method simulation. Keywords: SPIF, Strains, Stresses, Computation, FEM Analysis. 1. AN OVERVIEW OF ISEKI’S FORMULA SPIF (Single Point Incremental Forming) attempted to form a general analytic formula of and TPIF (Two Point Incremental Forming) are recommended a popular formula that almost all two methods of ISF technology (Incremental researchers have used as a basic theoretical Sheet Forming), a new metal foil forming analysis for their empirical researches. According technology to [3], [4] the basic normal stresses of Iseki’s without mould that was recommended by Leszak [1] in 1967. From 1997 to now on, this method has been developed and has definitively great results in industry such as strength in material. Especially, Iseki formula are displayed in (1): σφ = σ1 = σ Y .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.