在Taylor临界应力断裂准则的基础上，假定裂纹前端周向拉伸应力σθ= kσB，理论和实验研究了两糟弹钢（20#钢和9260钢）在内爆炸载荷作用下壳体的膨胀规律，以及断裂系数耳值，应交，应交率和破裂半径。破片回收试验表明，理论计算与实验结果具有相当好的一致性。
Abstract
On the basis of Taylor's tensile stress fracture criterion, and assuming that the tangential tensile stress σθ= KσΒ at the crack’s tip, the radial expansion, fracture co?efficient k，stress-strain, strain rate and burst radius of 2 varieties of shell steel are studied both in theory and experimentally. Fragments collected in the tests show that theoretical calculations are in good agreement with experimental results.
关键词
断裂准则 /
断裂系数 /
破裂半径 /
高应变率
{{custom_keyword}} /
Key words
fracture criterion /
fracture coefficient /
burst radius /
high strain rate
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] Taylor G I. The fragmentation of tubular bombs, Scientific Papers of Taylor G I, (London ： Cambrige University Press) , 1963，(44):387-390
[2] Hoggatt C R，Recht R F. Fracture behaviour of tubular bombs. J. Appl. Phys.，1968, 39 (3)： 1856-1862
[3] Al-Hassani STS, Johnson W. Dynamic deformation and fragmentation of strain-hardening, strain-rate sensitive shells containing high explosives. Int. Mech. Sci. 1969, 13： 957-979
[4] Ионов B H, Селиванов B B. Динамика Разрушеня Деформируемого Тела. Машинострение, Глава 4， 1987； 213-224
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
