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Numerical tool for quantifying energy deposition effects on representative hypersonic vehicle structures

机译:用于量化能源沉积效应对代表性超声型车辆结构的数值工具

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This paper presents a methodology to rapidly assess the transient thermal-structural response of a representative skin panel experiencing finite energy deposition over a hypersonic trajectory. The thermal state of the panel is calculated using reference-enthalpy heating with two-dimensional conduction. Panel thermal stress is calculated using a linear Levy sine series expansion model, complemented by a nonlinear finite element analysis. Numerical results using the X-43A trajectory as a case study are presented. Energy deposition is observed to have a greater effect on the skin panel when it is already thermally and aerodynamically loaded. The panel is more structurally compromised for energy pulses of longer duration, and/or applied earlier during the X-43A trajectory. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译:本文提出了一种快速评估在超音速轨迹上经历有限能量沉积的代表性皮肤面板的瞬态热结构响应的方法。 使用具有二维传导的参考焓加热来计算面板的热状态。 使用线性征收正弦串联膨胀模型计算面板热应力,由非线性有限元分析辅成。 介绍了使用X-43A轨迹作为案例研究的数值结果。 观察能量沉积在已经热和空气动力学加载时对皮肤面板具有更大的效果。 该面板更加结构地受到更长持续时间的能量脉冲,和/或在X-43A轨迹期间早先施加的能量脉冲。 (c)2021 Elsevier Masson SAS。 版权所有。

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