CAJ | 학술논문

采用单向拉伸实验研究了不同拉伸速率(2~200 mm·min-1)条件下CMDB推进剂的应力--应变曲线变化规律,并得到了不同温度条件下(-50~50℃)拉伸速率对CMDB 推进剂最大拉伸强度和最大伸长率的影响.结果表明:CMDB推进剂的应力--应变曲线大体可分为3个阶段;同样拉伸速率条件下,CMDB推进剂的最大拉伸强度和最大伸长率随温度升高分别减小和增大;同样温度条件下,最大拉伸强度和最大伸长率随拉伸速率增加分别增大和减小;CMDB推进剂的最大拉伸强度、最大伸长率与拉伸速率存在较好的幂函数关系.
채용단향랍신실험연구료불동랍신속솔(2~200 mm·min-1)조건하CMDB추진제적응력--응변곡선변화규률,병득도료불동온도조건하(-50~50℃)랍신속솔대CMDB 추진제최대랍신강도화최대신장솔적영향.결과표명:CMDB추진제적응력--응변곡선대체가분위3개계단;동양랍신속솔조건하,CMDB추진제적최대랍신강도화최대신장솔수온도승고분별감소화증대;동양온도조건하,최대랍신강도화최대신장솔수랍신속솔증가분별증대화감소;CMDB추진제적최대랍신강도、최대신장솔여랍신속솔존재교호적멱함수관계.
@@@@The effect of tensile rate(2~200 mm·min-1) on stress vs strain curve, maximum tensile strength and elongation rate of CMDB propellant at different temperature(-50~50℃) was investigated, by means of unilateral tensile method. It was found that the stress vs strain curve could be divided into three stages, maximum tensile strength decreased and maximum elongation rate increased with test temperature increasing at simple tensile rate, while maximum tensile strength increased and maximum elongation rate decreased with tensile rate increasing at simple test temperature. In addition, maximum tensile strength and elongation rate of CMDB propellant present power-law function relation with tensile rate.