不同彎曲角度蜂窩板之衝擊行為模擬分析

The Impact Behavior Simulation of Honeycomb Panel with Different Curvatures

江佑麟(Yu-Lin Ching)

指導教授 ： 陳政順

國立臺北科技大學/機電學院/製造科技研究所/碩士(2011年)

摘要

本文研究內容將針對使用鋁合金5052-H38所製作的曲型蜂窩板進行衝擊模擬分析。本文利用有限元素分析軟體LS-DYNA模擬在相同衝擊條件(10 mm上方之剛性球以初速度5m/s之衝擊)下針對不同彎曲角度(0~160度)的蜂窩板結構承受衝擊所產生之接觸合力與變形區域大小的變化；分析的結果顯示受衝擊後第一接觸時間，蜂窩板彎曲角度越小，而接觸面積越大所承受的衝擊接觸合力越大，本個案從0度蜂窩板所承受的接觸合力約為6900 N，減少至160度承受約3500 N的接觸合力為最小；此外，蜂窩板受衝擊後產生永久變形，彎曲角度越大所受到傷痕也越來越大，本研究個案隨彎曲角度從0度時損傷面積約為268 mm2、增加至160度時損傷面積約為455 mm2，代表蜂窩板經由撞擊產生永久變形後所承受衝擊的面積最大。

關鍵字

曲型蜂窩板 ； 有限元素分析 ； 衝擊行為

並列摘要

This study reports the impact behavior analysis and simulation of aluminum honeycomb panels with different bending angles (0 ~ 160 ) under low speed impact. In this paper, finite element analysis software LS-DYNA was used to study the impact characteristics of honeycomb panel structure under the loading of a 20 mm diameter steel ball hitting the panel at initial velocity of 5 m/s. The contact resultant forces and the damage area of deformation under impact are the topic of interest. In this case study the results show that the contact resultant force at the first contact period decreases from 6900 N for panel with 0 bending angle to 3500 N for panel with bending angle at 160 . In addition, the damage area after the impact increases from 268mm2 for panel with 0 bending angle to 455mm2 for panel with bending angle at 160 .

並列關鍵字

Honeycomb panel ； Finite Element Method ； Impact Behavior

參考文獻

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