Automobilio dinamikos matematinis modelis

Abstract

Baigiamajame darbe sudaryto važiuojančio automobilio su pradurta padanga sistemos matematiniam modeliui spręsti sukurta programinė įranga sistemoje Compaq Visual Fortran 6. Sudarytas matematinis modelis skiriasi nuo kitų autorių naudojamų modelių, kur visai nebuvo tiriamas toks atvejis, kaip pneumatinių padangų slėgio kitimo poveikis automobilio dinamikai. Tobulinant modelį galima tirti transporto priemonės reakciją padangai pradūrus, t.y. apskaičiuoti automobilio pokrypio kampus arba svorio centro judėjimo trajektoriją, atveju, kai visi ratai atitruko nuo horizontalaus kelio paviršiaus (pvz., nulėkimas nuo kelio, viaduko ir pan.), arba automobilio apsivertimo kampą.

The final thesis analyses movement characteristic of the dynamic system and studying the case of the moving vehicle, when the tyre of the vehicle is punctured. The analysis of the scientific sources concerning the theme of the vehicle’s and it’s separate parts dynamical model has been accomplished. Pneumatic tyre with pressure variations and full vehicle dynamic model was made-up. The following experimental research in vehicle dynamic simulation was performed using the algorithmic language schedule in Compaq Visual Fortran 6 programm. Under the simulated event presented a graphs to describe the sizes obtained: the punctured pneumatic tyre pressure dependence of the time, variation of the vehicle speed, the driwed track and the outward gas yield dependence of the tyre pressure. Structure: list of pictures, list of tables, introduction, the subject of research, survey of literature, dynamic model of pneumatic tyre, mathematic model of vehicle dynamic, computer-based experiment, list of literature. Thesis consists of: 50 p. text with appendixes, 40 pictures, 1 table, 20 bibliographical entries. Software for the mathematic model of moving vehicle with punctured tyre was make-up in \"Compaq Visual Eortran 6\" sistem. This mathematic model differ from other authors using models, there event of pneumatic tyre pressure impact for vehicle dynamics wasn't researched.