Ascalingmethodforpredictingdynamicresponsesofstiffenedplates madeofmaterialsdifferentfromexperimentalmodels
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摘要: :根据 定律提出了加筋板结构在水下爆炸冲击波作用下模型和原型动态响应相似的条件。在此 基础上,考虑到加筋板模型制造加工过程中的工艺和成本等因素,提出了利用普通钢加筋板模型预报船体钢 加筋板原型在水下爆炸冲击波作用下动态响应的相似预报方法。该方法考虑了流固耦合和材料应变率强化 效应等因素的影响,可用于指导利用常用的普通钢模型试验预报实船局部板架在水下爆炸冲击波作用下的 动态响应。Abstract: Byapplyingtheprinciple,threedynamicresponsescalingrequirementswereproposedbetweenmodelsandprototypesforstiffenedplatessubjectedtounderwaterblast. Basedontheabove scalingrequirements,ascalingmethodwasputforwardtopredicatethedynamicresponsesofstiffenedplatessubjectedtounderwaterblast, inwhichtheprototypeswasmadeofshipsteelandthe modelswasmadeofmildsteel.Andthefluid-solidcouplingeffectandthestrain-rateeffectwereconsideredinthescalingmethod. Twosampleswerecalculatedtovalidatethescalingmethod.Thescalingmethodcanbeusedtoguidethedynamicresponsepredictionofrealshipstructuressubjectedto underwaterblastbyexperimentalmodelsmadeofmildsteel
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Key words:
- mechanicsofexplosion /
- scalingmethod /
- underwaterblast /
- stiffenedplate /
- dynamicresponse /
- strainrateeffect
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