蜂窝夹层结构埋件拉脱力的影响因素

介绍了蜂窝夹层结构M5埋件的拉脱力测试条件及结果,分析了试样平面尺寸、真空压力、发泡胶用量和蜂窝-埋件高度阶差对拉脱力的影响.结果表明,当蜂窝-埋件高度阶差为0.15～0.40 mm时对拉脱力无明显影响;试样平面尺寸达到测试夹具加载口孔径2倍以上,方可避免边界效应影响;对于J-47D发泡胶,温度达到T1后加气压、卸真空更有利于提高拉脱力;合理优化埋件周围发泡胶填充量,既能节省发泡胶,又能提高埋件拉脱力.所得结果可为产品试验设计和拟定工艺参数提供参考.

Studies on Factors Influencing Honeycomb Structure Insert Pull Out Strength

The pull-out conditions of M5 inserts in honeycomb sandwich structures were tested.Results were discussed and the effects of sample dimension,vacuum pressure,amount of foaming resin and honeycomb-insert height differences on the pull-out strength were analyzed.It was found that the pull-out strength were not affected when the honeycomb-insert height step was between 0.15 and 0.40 mm.In order to avoid the boundary effect,the sample dimension should be at least twice of the aperture of the testing clamp.For J...