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like TomaszK said try with reduced increment size...second please make sure that you r using the right analysis...u said that u r using the default settings...try changing that...this error usually comes bcoz of wrong analysis chosen..

hello every body, i want to model impact problem by SPH technique. for that their is .inp (parametric file) available in the tutes of abaqus 6.11 now that file is not importable in abaqus. i have 2 questions for u... 1. is it possible in some way that i can import the parametric...

...though by ur idea of middle axis algo...the warnings has reduced to zero but the aspect ratio has increased...how to control that sir...or reduce the aspect ratio... thanks 4 ur reply...

thanks for the reply...but that will allow me to change from c3d8r elements to any other...n these types of elements r best suited for stress/displacement analysis...so is their any way of improving te geometry curvature...or any thing else...

hello every1.. i have a impact problem...in which the impact region of the target when meshed gives warning about some elements...also the aspect ratio was not going below 1.2...since impact region is my critical region so i want to reduce the bad elements in it...it will also...