发布时间：2023-08-29

汇报时间：2023年8月29日（星期二）下午15:00

汇报地点：创新港 2号巨构 2-6F-075会议室

汇报人：张温馨

国际会议信息

会议名称：The 23rd International Conference on Composite Materials

会议时间：30 July-4 August，2023

会议地点：ICC, Belfast

会议简介：The 23rd International Conference on Composites Materials (ICCM 23) is the premier international conference in the field of composite materials and was first held in 1975 in the cities of Geneva and Boston. Since that time the conference has been held biennially in North American, European, Asian, Oceanic and African cities. The event will attract the leading researchers and practitioners, to report and exchange ideas on the latest developments in the advancement and exploitation of a wide range of composites materials and structures.

参会论文信息

Title：Modeling of high-velocity impact behaviour of sandwich structures under bird strike loading

Author：Wenxin Zhang, Tengfei Li, Jiangwei Qi, Chaozhong Chen, Jin Zhou

Abstract: Polyvinyl Chloride (PVC) foam-core based sandwiches with fibre-reinforced composite face sheets provide high strength and bending stiffness as well as good designability, which has been widely used in the manufacturing of transportation vehicles. While these sandwich composite structures may expose to bird strike during the service, which threatens the safety operation of high-speed transportation vehicles. The present studies combine experimental and numerical investigations on the bird-strike resistance of large-size foam-core sandwich composite structures. Gas-gun tests have been carried out to study the behaviours of foam-core sandwich composite structures subjected to an impact by gelatine projectiles. A high-speed camera is employed to capture the deformation of the projectiles and strain gauges are employed to measure the local strain near to the striking point from the rear surface of the specimens. A Finite Element (FE) model is developed to simulate the gelatine-impact on the foam-core sandwich composite structures. The constitutive model of the gelatine is built up using the Smooth Particle Hydrodynamic (SPH) method with the Murnaghan Equation Of State (EOS) for solid element. Foam-core material is modelled using the crushable foam model with isotropic hardening. Regarding the model for composite panel, an in-house subroutine has been employed, which takes account for the strain rate dependency as well as different failure modes. The Finite Element (FE) predicted deformations are compared with the ones experimentally measured by Digital Image Correlation (DIC). Good agreement has been obtained between the Finite Element (FE) predictions and experimental results. The dynamic responses and failure characteristics of the foam-core sandwich composite structures are further studied using the validated numerical model. This piece of work is able to prove some guidance to the design of the bird-strike resistant foam-core sandwich composite structures.

欢迎有兴趣的同学届时参加。