Avancerad sökning

Hittade 3 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Minimizing the Effect of Geometric Variation in Compliant Assemblies

   Författare :Stefan Dahlström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FEA; Compliant assembly evaluation; Tolerancing; sheet metal assembly;

   Sammanfattning : Sheet metal assemblies are often used as support structures in automobiles, airplanes and appliances. These structures not only provide a frame for other modules to be assembled, but also give the product its aesthetic form. All assembly processes are affected by part and process variation. LÄS MER

3. 2. Variation simulation of sheet metal assemblies for geometrical quality : parameter modeling and analysis

   Författare :Stefan Dahlström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tolerancing; geometrical variation; variation simulation; sheet metal assembly; virtual verification; geometrical quality;

   Sammanfattning : The automotive industry deals with an increased demand for virtual verification of the geometrical quality of the product. The aim is to reduce the need for adjusting the assembly process to deliver a product with high quality. LÄS MER

4. 3. Probabilistic time estimation in tunnel projects

   Författare :Mohammad Mohammadi; Johan Spross; Fredrik Johansson; Larsson Stefan; Anna Kadefors; Lars-Olof Dahlström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cost overrun; Tunneling projects; Probabilistic approaches; time estimation; Kostnadsöverskridande; tunnelprojekt; sannolikhetsmetoder; tidsuppskattning; Soil and Rock Mechanics; Jord- och bergmekanik;

   Sammanfattning : Transport infrastructure projects, including tunneling, suffer from timedelays and cost overrun. A literature review shows that the effect ofuncertainty has been neglected in explaining time and cost overrunmeaning that technical explanations matter. LÄS MER