目前光弹实验中,浇铸立体模型的腊模法很麻烦,模型质量也很难保证。为了寻求更好的方法我们曾试验了聚乙烯压模法,后来又做了一些改进。这种方法简单、方便、迅速,不需压力设备,阴模可反复使用。制得的光弹模型精度高,不用机械加工,效果较好。现简介如下:(一)聚乙烯阴模制作 At present, in the photoelastic experiment, the wax method of casting the three-dimensional model is very troublesome, and the quality of the model is hard to guarantee. In order to find a better way we have tested the polyethylene die, and later made some improvements. This method is simple, convenient and rapid, without pressure equipment, the negative can be used repeatedly. The obtained photoelastic model has high precision without mechanical processing and has good effect. Are briefings are as follows: (a) polyethylene negative mold making