CAJ | 학술논문

为深入探讨弹体对高寒高海拔地区多年冻土的侵彻作用，从多年冻土温度特性出发，用符合冻土特性的摩尔－库伦强度准则推导该地区抗侵彻深度理论计算公式。结果表明，该公式能反映冻土温度与侵彻阻力关系，为空腔膨胀理论在冻土材料中的有益尝试。将理论分析计算结果与Young侵彻公式计算结果比较知，最大侵彻深度与速度变化趋势一致，理论公式的合理性获得论证。案例分析表明，多年冻土层温度状况对弹体最大侵彻深度关系较密切，能较客观的反映冻土类材料特性。
위심입탐토탄체대고한고해발지구다년동토적침철작용，종다년동토온도특성출발，용부합동토특성적마이－고륜강도준칙추도해지구항침철심도이론계산공식。결과표명，해공식능반영동토온도여침철조력관계，위공강팽창이론재동토재료중적유익상시。장이론분석계산결과여Young침철공식계산결과비교지，최대침철심도여속도변화추세일치，이론공식적합이성획득론증。안례분석표명，다년동토층온도상황대탄체최대침철심도관계교밀절，능교객관적반영동토류재료특성。
Inordertoanalysetheprojectilebodypenetratingintohigh-coldandhigh-altitudepermafrostarea,a theoretical formula was presented to calculate the maximum penetration depth.The formula was deduced by using the modified Mohr-Coulomb yielding criterion,which can well meet the character of permafrost.The results indicate that the formula can reflect the relationship between the permafrost temperature and resistance pressure observably,and also it is a good trying in using the cavity expansion theory.Comparing the results of the theoretical calculation with those of the Young's penetration equation,it is found they have a similar changing trend,thus it is demonstrated the theoretical formula is rational.Case studies also show that the maximum penetration depth is closely related to the permafrost temperature,and can reflect the characteristics of frozen soil material objectively.