Numeričko modeliranje naprezanja uslijed udarnog opterećenja

undergraduate thesis

• Title (english): Numerical analysis of stress due to impact load
• Author: Josip Latinčić
• Mentor: Igor Karšaj (mentor)
• Mentor: Lana Virag (komentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2021-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

U ovom radu će se odrediti naprezanja i progibi elastične grede koja je zglobno oslonjena na svojim krajevima i udarno opterećena težinom tijela koje s određene visine pada na gredu na dva oslonca. Točka gdje udarno tijelo dolazi u kontakt s gredom se nalazi na polovici duljine grede. Naprezanja i progibi će se analitički odrediti u slučaju statičkog opterećenja, te će se dobivene vrijednosti iskoristiti za analitičko određivanje naprezanja i progiba pri udarnom opterećenju, odnosno pri ispuštanju padajućeg tijela s određene visine. Te vrijednosti će se izračunati za tri različite visine. Dobiveni rezultati će se usporediti s rezultatima dobivenim u programu Abaqus metodom konačnih elemenata. Naposljetku će se u Abaqus-u ispitati utjecaj trenja i vlastite težine grede na ranije dobivene rezultate.

Abstract (english)

In this thesis, stresses and displacements of an elastic beam supported by joints on its ends caused by an impact due to free-falling body from a given height will be determined. The impact body comes into contact with the beam at its mid-point. Stresses and displacements will first be calculated analytically in the case of static load. These values will then be used in analytical determination of impact factor, stresses and displacements in the case of impact load, i.e. in the case of dropping the falling body from a given height. The mentioned values will be calculated for three different heights. Next, the obtained results will be compared with the results calculated by finite elements method in Abaqus program. Finally, the effect of friction and weight of beam itself on the previously obtained results will be numerically examined in Abaqus.

• Keywords: udarno opterećenje; metoda konačnih elemenata; greda; naprezanje; progib; trenje
• Keywords (english): impact load; finite elements method; beam; stress; displacement; friction
• Language: croatian
• URN:NBN: urn:nbn:hr:235:837013
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-02-17 11:27:08