Most finite element models of small arms focus on an idealized barrel,typically one with a perfectly straight bore centerline.Using five different experimentally measured bore centerlines,this investigation analyzes t...Most finite element models of small arms focus on an idealized barrel,typically one with a perfectly straight bore centerline.Using five different experimentally measured bore centerlines,this investigation analyzes the effect centerline nonlinearity has on projectile exit conditions.This includes the effect of rotating a centerline through several orientations.Modeled using Abaqus/Explicit,this dynamic analysis simulates a single firing cycle for each centerline.Projectile jump is calculated for each model as a measure of the effects of warped centerlines.The warped centerlines have a small effect on barrel dynamics.展开更多
Indonesia, as the largest archipelagic state in the world, shares maritimeborders with many countries including Malaysia in the Straits of Malacca, the South China Sea and the Celebes Sea. Because of its geopolitical ...Indonesia, as the largest archipelagic state in the world, shares maritimeborders with many countries including Malaysia in the Straits of Malacca, the South China Sea and the Celebes Sea. Because of its geopolitical location these borders are very porous and, as a consequence, are highly difficult to monitor and control, making it vulnerable spots for illegal activities such as arms smuggling. This paper aims to examine the challenges faced by Indonesia and Malaysia in dealing with the main security border issues. The paper then concludes that Malaysia has become the main route for small arms illicit trafficking from other Southeast Asian countries to Indonesia＇s conflict areas. Indonesia and Malaysia face an enormous challenge, particularly in view of the recent happenings in conflict zones and the increasingly need to secure their common borders.展开更多
1.Background of The Small Arms Survey The proliferation of small arms and light weapons represents a grave threat to human security. The unchecked spread of these weapons has exacerbated inter-and intra-state conflict...1.Background of The Small Arms Survey The proliferation of small arms and light weapons represents a grave threat to human security. The unchecked spread of these weapons has exacerbated inter-and intra-state conflicts,contributed to展开更多
文摘Most finite element models of small arms focus on an idealized barrel,typically one with a perfectly straight bore centerline.Using five different experimentally measured bore centerlines,this investigation analyzes the effect centerline nonlinearity has on projectile exit conditions.This includes the effect of rotating a centerline through several orientations.Modeled using Abaqus/Explicit,this dynamic analysis simulates a single firing cycle for each centerline.Projectile jump is calculated for each model as a measure of the effects of warped centerlines.The warped centerlines have a small effect on barrel dynamics.
文摘Indonesia, as the largest archipelagic state in the world, shares maritimeborders with many countries including Malaysia in the Straits of Malacca, the South China Sea and the Celebes Sea. Because of its geopolitical location these borders are very porous and, as a consequence, are highly difficult to monitor and control, making it vulnerable spots for illegal activities such as arms smuggling. This paper aims to examine the challenges faced by Indonesia and Malaysia in dealing with the main security border issues. The paper then concludes that Malaysia has become the main route for small arms illicit trafficking from other Southeast Asian countries to Indonesia＇s conflict areas. Indonesia and Malaysia face an enormous challenge, particularly in view of the recent happenings in conflict zones and the increasingly need to secure their common borders.
文摘1.Background of The Small Arms Survey The proliferation of small arms and light weapons represents a grave threat to human security. The unchecked spread of these weapons has exacerbated inter-and intra-state conflicts,contributed to
