{"title":"弹丸速度和介质阻力对弹丸跳沙的影响","authors":"Y. L. Baif, W. Johnson","doi":"10.1243/JMES_JOUR_1981_023_015_02","DOIUrl":null,"url":null,"abstract":"It has been observed experimentally that when a sphere ricochets off water or sand the critical impact angle depends on the impinging velocity.To explain this, a model is developed which takes into account the weight of the sphere and the static resistance of the medium into which penetration occurs. The proposed model can also treat processes in which the angle of impact is large and where the velocity of the sphere undergoes considerable change. Projectile trajectories which have been calculated for various conditions are presented and discussed. Numerical results for steel, aluminium alloy, and lead spheres are in good agreement with such experimental results as are available.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"0 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1981-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"15","resultStr":"{\"title\":\"The Effects of Projectile Speed and Medium Resistance in Ricochet off Sand\",\"authors\":\"Y. L. Baif, W. Johnson\",\"doi\":\"10.1243/JMES_JOUR_1981_023_015_02\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"It has been observed experimentally that when a sphere ricochets off water or sand the critical impact angle depends on the impinging velocity.To explain this, a model is developed which takes into account the weight of the sphere and the static resistance of the medium into which penetration occurs. The proposed model can also treat processes in which the angle of impact is large and where the velocity of the sphere undergoes considerable change. Projectile trajectories which have been calculated for various conditions are presented and discussed. Numerical results for steel, aluminium alloy, and lead spheres are in good agreement with such experimental results as are available.\",\"PeriodicalId\":114598,\"journal\":{\"name\":\"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)\",\"volume\":\"0 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1981-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"15\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1243/JMES_JOUR_1981_023_015_02\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1243/JMES_JOUR_1981_023_015_02","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Effects of Projectile Speed and Medium Resistance in Ricochet off Sand
It has been observed experimentally that when a sphere ricochets off water or sand the critical impact angle depends on the impinging velocity.To explain this, a model is developed which takes into account the weight of the sphere and the static resistance of the medium into which penetration occurs. The proposed model can also treat processes in which the angle of impact is large and where the velocity of the sphere undergoes considerable change. Projectile trajectories which have been calculated for various conditions are presented and discussed. Numerical results for steel, aluminium alloy, and lead spheres are in good agreement with such experimental results as are available.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
