Parametrično modeliranje in optimizacija konstrukcij s programom Rhinoceros - Grasshopper : diplomska naloga

Soklič, Rok (author), Cerovšek, Tomo (mentor), Brank, Boštjan (comentor)

Diplomska naloga obravnava uporabo sodobnih računalniških orodij za geometrijsko modeliranje v procesu projektiranja objektov. Z vpeljavo parametričnega opisa geometrije v modelirniku 3D ter s povezavo modelirnika s programom za računanje konstrukcij, se odpirajo možnosti za avtomatično izmenjavo podatkov med programi za design in analizo konstrukcij. To lahko vodi k izboljšavi procesa projektiranja objektov. V prvem delu naloge sem predstavil osnove matematičnega zapisa geometrijskih elementov NURBS (angl. Non-Uniform Rational Basis Spline), ki jih uporabljata računalniški program za geometrijsko oblikovanje Rhinoceros in njegov dodatek Grasshopper. V drugem delu naloge sem predstavil parametrizacijo geometrije enostavnih ploskovnih in prostorskih paličnih konstrukcij v programu Rhinoceros (Grasshopper) ter njegovo povezavo s programom za analizo konstrukcij SAP2000. Znotraj okolja Grasshopper sem uporabil različne dodatke za ovrednotenje geometrije, vključno z genetskim optimizacijskim algoritmom, ki sem ga uporabil za interaktivno iskanje primerne oblike konstrukcije pri predpisanih pogojih. V zadnjem delu naloge je prikazana specifična nadgradnja omenjene povezave z vpeljavo novega vmesnika, ki sem ga izdelal v programskem jeziku Visual Basic.NET za uporabo v okolju Grasshopper.

• Language: Slovenian
• Keywords: gradbeništvo, UNI, dipl., parametrizacija, NURBS, Rhinoceros, Grasshopper, genetski algoritmi, optimizacija konstrukcij
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [R. Soklič]
• Year: 2015
• Number of pages: XIV, 89 str., [17] str. pril.
• PID: 20.500.12556/RUL-30881
• UDC: 004.42:624.04 (043.2)
• COBISS.SI-ID: 7010913
• Publication date in RUL: 09.07.2015

Secondary language

• Language: English
• Title: Parametric modelling and structural optimization using the computer software Rhinoceros-Grasshopper

Abstract

This graduation thesis comprises the use of modern geometry design software in the process of structural design. By implementing parametrically designed geometry and interactively linking 3D computer graphics application software with structural analysis software, tasks involved in structural design (e.g. automatic design data transfer) can be significantly improved. In the first part of the thesis, the basics of NURBS (Non-uniform Rational Basis Spline) mathematical elements are briefly presented, since the here used geometry design software Rhinoceros, and its add-on Grasshopper, are based on the NURBS. In the second part of the thesis examples of parametric geometrical design of simple space frame and shell structures are presented, along with a linking procedure beetwen Rhinoceros and structural analysis software SAP2000. In order to evaluate suitability of structural geometry, several Grasshopper based add-ons were tested out including specific genetic optimization algorithms. The genetic algorithms allow us to find optimal structural geometry due to predefined objective function and constraints. In the final part of the thesis, a new Grasshopper based Rhinoceros-SAP2000 interface/component is introduced which was programmed by using Visual Basic.NET scripting language.

• Keywords: graduation thesis, civil engineering, parametrization, NURBS, Rhinoceros, Grasshopper, SAP2000, genetic algorithms, structural optimization