عناصر مشابهة
The Relation between Wrinkling and Thickness Variation in Multi-Point Forming: Numerical Simulation and Experimental Verification
| المصدر: | المجلة الجامعة |
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| الناشر: |
جامعة الزاوية - مركز البحوث والدراسات العليا
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| المؤلف الرئيسي: | |
| مؤلفين آخرين: | , |
| المجلد/العدد: | مج20, ع2 |
| محكمة: | نعم |
| الدولة: | ليبيا |
| التاريخ الميلادي: | 2018 |
| الصفحات: | 53 - 78 |
| رقم MD: | 1263252 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | English |
| قواعد المعلومات: | EduSearch EcoLink IslamicInfo AraBase HumanIndex |
| مواضيع: | |
| رابط المحتوى: |
| المستخلص: | Multi-Point Forming (MPF) is a flexible technique in which reconfigurable pins are used to generate a continuous 3D surface. Similar to solid dies, many defects appear in discrete dies, which have negative effects on the quality of produced parts, such as thickness variation and wrinkling on deformed shape. Previous investigations have focused on predicting the occurrence of wrinkling without taking into account the relation between wrinkling and thickness variation. The aim of this study was to investigate the relation between wrinkling and thickness variation in flexible multi-point stamping die. Finite element modelling was employed to simulate the multi-point forming of doubly curved parts and study the effect of thickness variation on the formation of wrinkling. Experimental work was carried out using a MPF die with 10mm pins to validate the simulation results. The results show that the wrinkling initiation at the thickening area in the middle of the edges, and increasing the strength of material make amplitude of wrinkling wave more higher. |
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