【摘 要】
：
Research on the acoustic stealth structures of submarines primarily strives for low frequency, pressure resistance, and broad frequency domain absorption.The high-quality acoustic stealth coating on s
【机 构】
：
Warship Engineering Department of Naval University and Engineering,Wuhan 430033,China;Mobile Postdoc
【出 处】
：
第二届中国国际复合材料科技大会 (CCCM-2)
论文部分内容阅读
Research on the acoustic stealth structures of submarines primarily strives for low frequency, pressure resistance, and broad frequency domain absorption.The high-quality acoustic stealth coating on submarines is a complicated Multi-scale and multi-component structure, which consists of numerous macro-structures, such as acoustic air-filled cavities,laminated structures, filling components, and micro-phase structures.
其他文献
本文针对填充了聚氨酯弹性体的隔板加劲夹层结构，阐述了不同等效参数计算方法，并对其等效参数进行了计算。首先讨论和计算了不考虑剪切变形时的整体等效方法，将整体夹层结构等效为正交各向异性薄板，给出了考虑夹芯抗弯刚度的整体刚度系数，并讨论了考虑剪切变形时使用经典理论进行计算所需的各个刚度系数。然后在考虑夹芯剪切变形时的情况下，推导了隔板分隔、并充有聚氨酯弹性体的夹芯层的等效弹性常数，并使用基于应变能密度等
海洋柔性管道为保证较好的弯曲变形能力大多为螺旋缠绕结构。在生产过程中或外压和弯曲载荷作用下，截面都会产生一定的椭圆化，为考虑椭圆度对螺旋缠绕结构拉伸刚度的影响，建立了一种新的基于椭圆柱面和螺旋带的分析模型，该模型在两者之间建立了一个新的几何关系，并考虑了在椭圆柱面上螺旋带的轴向应变和曲率变化以及柱面和螺旋层之间的接触压力。通过ABAQUS建立一个3D的有限元模型并验证了理论模型的合理性。在理论模型
Three type epoxy resin system forrapid RTM process are prepared by using diethylenetriamine,5-amino-1,3,3-trimethylcyclohexanemethylamine, 1,3-cyclo-hexanebis(meth ylamine), self-made latent curing ag
Automotive lightweighting, as one of the developing direction of automobile industry, plays an important role in improving the economic power of our country and even automobile manufacturers.Carbon fi
Automobile parts produced by Carbon Fiber Reinforced Plastic (CFRP) have been successfully used in foreign mass production vehicles.CFPR parts have great application value for the application of light
New regulation regarding CO2 emission in transportation are bringing new challenges in automotive Industry.Newly developed formulations and processes for structural composites parts manufacturing, eve
In order to improve the anti-ice/icephobic performance of epoxy resin coating and decrease its surface energy, silicone was introduced to prepare silicone-modified epoxy resin coating.By using dipheny
本文采用二乙烯三胺、异佛尔酮二胺、1,3-二(氨甲基)环己烷、自制潜伏性固化剂及促进剂,制备了三种适用于树脂传递模塑成型(RTM)的中温快速固化的环氧树脂体系,并对其工艺特性及力学性能进行了系统研究。研究结果表明,三种环氧树脂体系最佳注射温度60-80℃,70℃下的适用期分别为8min、15min、25min,可实现130℃下5min内快速固化,浇注体力学性能优异,与碳纤维匹配性好,可满足汽车部件
Sandwich plate system (SPS) is a new kind of sandwich composite structure which used in shipbuilding and bridge construction.A series of equivalent methods are described discussed for SPS with cross w
Offshore pipeline has a high level of bending deformation because of helical structure.The production process and the external loads can cause a cross-section ovalization.To predict the tension stiffn