EFFECT OF THE IMPACT DAMAGE TO STRENGTH OF FIBROUS COMPOSITE

摘要

Contact strength of the GFRC was investigatedrntheoretically and experimentally. The sizes ofrncontact spot and indention of spherical andrncylindrical body were defined by iterationsrnrepeating the procedure of finite elementrnanalysis. The use of the general and specialrncriteria of destruction can give the sufficientrninformation for the approximate prediction ofrnkind of partial destructions in a material andrnthe sizes of a zone of damage. Results ofrnmicroscopic researches of a surface of a cut in arnzone of impact confirm the described shape ofrndestruction of fiberglass at impact with ratherrnsmall energy.