Procena čvrstoće zavarenih spojeva na tankim cilindričnim ljuskama oslabljenim aksijalnom prslinom, modifikovanom rei metodom

Abstract

U radu su analizirani modifikovana REI metoda i mogućnost njene primene na zavarene spojeve tankih cilindričnih ljuski, ne uzimajući u obzir specifičnost zavarenih spojeva (heterogenost strukture, zaostale napone i geometrijske nepravilnosti), a sve sa ciljem dobijanja dovoljno tačne i jednostavne inženjerske procedure za određivanje sila rasta prsline (SRP) u zavarenim spojevima u kojima su prisutni zaostali naponi i geometrijske nepravilnosti. U radu su prikazane modifikacije radi uprošćenja REI metode i mogućnosti izrade odgovarajućeg programa u cilju brže primene procedure.

The modified REI method and possibility of its application to the welded joints of this cylindrical shells have been analyzed in the paper, without taking into consideration specificity of welded joints (heterogenity of structure, residual stresses and geometric irregularities), in order to obtain quite correct and simple engineering procedures for determination of crack grow forces in welded joints in which there are residual stresses and geometric irregularities. The modifications for REI method simplification and possibilities of producing suitable program in order to speed up application of procedure have been reviewed in the paper.