Abstract Low-velocity impact of fully clamped sandwich beams with fibre-metal laminate face-sheets and metal foam core struck by a heavy mass is investigated. Analytical solutions are developed for the dynamic response of sandwich beams with fibre-metal laminate face-sheets considering the interaction of bending and stretching induced by large deflections. According to the rigid-plastic material approximation with modifications, simple formulae are obtained for the large deflection of sandwich beams with fibre-metal laminate face-sheets. Numerical calculations are carried out, and analytical solutions capture numerical results reasonably. The effects of the composite volume fraction, the ratio of metal layer strength to composite layer strength, and core strength on the structural response are discussed. Using the analytical formulae, optimal design charts are constructed to minimize the mass of sandwich beams. It is demonstrated that the present analytical model can predict the post-yield behaviour of sandwich beams with fibre-metal laminate face-sheets reasonably.

中文翻译：

---

具有纤维金属层压板面板的夹层梁的低速冲击

摘要 研究了具有纤维-金属层压板面板和金属泡沫芯的全夹紧夹层梁被重物撞击的低速冲击。考虑到大挠度引起的弯曲和拉伸的相互作用，为带有纤维-金属层压板面板的夹层梁的动态响应开发了分析解决方案。根据刚塑性材料近似和修正，得到了具有纤维-金属层压板面板的夹层梁大挠度的简单公式。进行数值计算，解析解合理地捕捉数值结果。讨论了复合材料体积分数、金属层强度与复合材料层强度的比率以及芯部强度对结构响应的影响。使用分析公式，构建最佳设计图以最小化夹层梁的质量。结果表明，该分析模型可以合理地预测纤维-金属层压板面板夹层梁的屈服后行为。