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申请号:201911323233.4 公开号:CN111122319A 主分类号:G01N3/08
摘要:【中文】本发明属于复合材料强度技术领域,涉及一种复合材料胶接修理结构强度评估方法。本发明使用ABAQUS用户子程序VUMAT编写复合材料本构关系,cohesive界面单元模拟胶接界面,使用Hashin准则、二次名义应力准则,以及基于能量的连续退化方式,分别模拟复合材料、胶接界面的初始失效和渐进损伤过程;基于试验方法,设计轴压和剪切情况下复合材料加筋壁板三维模型的边界和载荷施加方法;采用ABAQUS显示动力学方法计算复合材料加筋壁板胶接修理结构的强度;采用稳定性分析与显示动力学方法相结合的方法计算复合材料加筋壁板完好结构的强度。利用上面的技术,用来对复合材料加筋壁板修理结构进行有限元仿真分析,并对其原始结构、损伤结构进行强度对比,实现修理方案的可设计性。 【EN】The invention belongs to the technical field of composite material strength, and relates to a method for evaluating the strength of a composite material cementing repair structure. The method comprises the steps of writing a composite material constitutive relation by using an ABAQUS user subprogram VUMAT, simulating a cementing interface by using a harmonic interface unit, and respectively simulating the initial failure and progressive damage processes of the composite material and the cementing interface by using a Hashin criterion, a secondary nominal stress criterion and an energy-based continuous degradation mode; designing a boundary and a load application method of a three-dimensional model of the composite material reinforced wall plate under the conditions of axial compression and shearing based on a test method; calculating the strength of the composite material reinforced wall plate cementing repair structure by using an ABAQUS display dynamics method; and calculating the strength of the intact structure of the composite material reinforced wall plate by adopting a method combining stability analysis and a display dynamics method. The technology is used for carrying out finite element simulation analysis on the repair structure of the composite material reinforced wall plate, and comparing the strength of the original structure and the damaged structure, so that the designability of the repair scheme is realized.
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申请号:201911323892.8 公开号:CN111086245A 主分类号:B29C73/10
摘要:【中文】本发明属于航空航天技术领域,涉及一种用于飞机复合材料结构胶接修理装置及修理方法;包括便携加热装置、便携真空装置,便携温度测量装置、移动通信终端;便携温度测量装置上的温度监控装置通过热电偶连接导线连接便携式加热装置上的热电偶,监控电热毯上各处温度,并通过蓝牙发射系统发送至手机APP;手机APP通过与内部设置的加热历程曲线对比,计算出温度差值,并通过蓝牙发射装置控制加热装置上的电源系统来调整加热电量。与现有技术相比,本发明提供了用于飞机复合材料结构胶接修理的快速方法,通过便携装置和手机控制可以取消对一般使用热补仪修理的限制,更好的保证飞机运营时的快速修理,提高产品修理质量。 【EN】The invention belongs to the technical field of aerospace, and relates to a glue joint repairing device and a repairing method for an airplane composite material structure; the device comprises a portable heating device, a portable vacuum device, a portable temperature measuring device and a mobile communication terminal; the temperature monitoring device on the portable temperature measuring device is connected with a thermocouple on the portable heating device through a thermocouple connecting lead, monitors the temperature of each part on the electric blanket and sends the temperature to the mobile phone APP through the Bluetooth transmitting system; cell-phone APP calculates the temperature difference through the heating process curve contrast with inside setting to power system through bluetooth emitter control heating device goes up adjusts the heating electric quantity. Compared with the prior art, the invention provides a quick method for the adhesive joint repair of the composite material structure of the airplane, the limit on the repair of a general hot patching instrument can be eliminated through the control of the portable device and the mobile phone, the quick repair of the airplane during operation can be better ensured, and the repair quality of products is improved.
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