The strainchange caused by performing punching to the resin molded part on the surface of the molded part is measured.
对因对树脂成形品打孔产生的、成形品表面的应变变化进行测定。
2
Analysis is introduced about the supplementary condition from deducing formula and the stress-strainchange of beam's section when it is destroyed.
对该条件的公式进行了推导；分析了破坏时梁截面的应力应变情况。
3
Construction design, demarcate, seal and defend is proceeded, and the strainchange principle along with the pressure is matched basically with the real practice.