Analysis of dynamic parameters of plane frame structures using approximate and exact computational models

Autor: Kaličanin, Luka
Přispěvatelé: Skrinar, Matjaž
Jazyk: chorvatština
Rok vydání: 2022
Předmět:
Popis: U radu je prikazana analiza linijskih nosača (statička analiza), odnosno ravninske okvirne konstrukcije, koje su sastavljene od grednih, odnosno štapnih elemenata prema teoriji prvog reda, te analiza dinamičkih parametara ravninske okvirne konstrukcije pomoću metode konačnih elemenata. Za potrebe analize, te lakšeg računanja matrica krutosti i matrica masa, napravljen je općeniti program Dynamic Ice u programskom jeziku „Python“. Program Dynamic Ice koristi se za potrebe potresnog inženjerstva, a može se koristiti i za statičku, te analizu dinamičkih parametara koji nisu nužno dio potresnog inženjerstva. Ovaj program za analizu statičkog odgovora i dinamičkih parametara okvirne konstrukcije koristi metodu konačnih elemenata. Radi usporedbe rezultata dinamičke analize ravninske konstrukcije, napravljen je i drugi program Crimp koji određuje inženjersku aproksimaciju osnovnog perioda vibracija koristeći izraz (4.9) iz Eurokoda 8: Projektiranje potresne otpornosti konstrukcija. Najbitnija razlika između ta dva programa je priprema matrice krutosti, te u broju stupnjeva slobode. The analysis of spatial frames (static analysis) or plane frame structures, formed of beam elements according to the first order theory and analysis of dynamic parameters of plane frame structures using finite element method is presented in the paper. For the purposes of analysis and easier assembling of the stiffness matrices and mass matrices, a program Dynamic Ice was created in the programming language „Python“. The Dynamic Ice program can be applied for static analysis, as well as for computation of dynamic parameters, which are required either in classical dynamic analysis or in earthquake engineering (taking into account the requirement of the EC 8 code regarding cracking of cross-sections). This program uses the finite element method to analyze the static response as well as dynamic parameters of a frame structure. In order to compare the results of the dynamic analysis of the plane frame structure, program Crimp was additionally created that determines approximation of the fundamental period of vibration using the expression (4.9) from Eurocode 8: Design of structures for earthquake resistance. The most important difference between the two programs is the preparation of the stiffness matrix and the number of degrees of freedom.
Databáze: OpenAIRE
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