K.Palanikumar
,
L.Karunamoorthy
,
R.Karthikeyan
材料科学技术（英文）
In recent years, glass fiber reinforced plastics (GFRP) are being extensively used in variety of engineering applications in many different fields such as aerospace, oil, gas and process industries. However, the users of FRP are facing difficulties to machine it, because of fiber delamination, fiber pull out, short tool life, matrix debonding, burning and formation of powder like chips. The present investigation focuses on the optimization of machining parameters for surface roughness of glass fiber reinforced plastics (GFRP) using design of experiments (DoE). The machining parameters considered were speed, feed, depth of cut and workpiece (fiber orientation). An attempt was made to analyse the influence of factors and their interactions during machining. The results of the present study gives the optimal combination of machining parameters and this will help to improve the machining requirements of GFRP composites.
关键词:
Optimization
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周春苹
,
李兴德
,
朱杉
玻璃钢/复合材料
本文总结以往砂石撞击的文献资料,得到砂石撞击时的速度和能量等参数.进行了砂石撞击复合材料平板的试验,并且建立了玻璃纤维复合材料平板砂石撞击的LS-DYNA有限元计算模型,将砂石撞击试验的结果与LS-DYNA有限元仿真计算的结果进行对比,使计算中的复合材料行为与试验中的行为相同.通过对砂石模型的编程处理,使计算中砂石的行为与砂石在撞击中的行为相一致.通过这种方法,得到了采用LS-DYNA软件计算砂石撞击时复合材料平板及砂石的准确参数及相关接触参数.在今后砂石撞击雷达罩的计算中,将复合材料平板的模型替换为雷达罩模型,即可形成准确的雷达罩与砂石撞击的有限元模型,再采用LS-DYNA进行雷达罩与砂石撞击的计算,便可得到可靠的仿真计算结果.
关键词:
砂石冲击
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玻璃纤维复合材料
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试验
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数值模拟
