Lambda shows the mass savings possible with material substitution. When a joint or part is redesigned, then increased mass savings can only be attributed to the material substitution when the lambda of the part is also changed. Generally speaking, a more weight-efficient design implies a lower lambda, not an increased lambda. This means that as a design becomes more efficient, less weight is saved through material substitution, but the overall weight savings goes up for both steel and aluminum designs. Joints are among the most complex parts of a body. The concept of using lambda was successfully extended to the analysis of joints and the weight savings available by material substitution. Lambda is the only number needed to successfully predict the change in mass due to material substitution. It characterizes the part and its design. The fact that a large number of different joints in this truck body showed similar lambdas indicates that there may be similar underlying physical phenomena causing the lambda. The methodology developed herein extends the performance index concepts developed in the literature to the design and material substitution problem faced by automotive engineers.
Estimating weight reduction effects of material substitution on joints with constant stiffness
Abschätzung der Gewichtseinsparung durch Werkstoffersatz bei Verbindungselementen konstanter Steifigkeit
2002
13 Seiten, 18 Bilder, 1 Tabelle, 9 Quellen
Aufsatz (Konferenz)
Englisch
Estimating Weight Reduction Effects of Material Substitution on Joints with Constant Stiffness
SAE Technical Papers | 2002
|Estimating weight reduction effects of material substitution on joints with constant stiffness
Kraftfahrwesen | 2002
|British Library Conference Proceedings | 2002
|Causes of Weight Reduction Effects of Material Substitution on Constant Stiffness Components
SAE Technical Papers | 2002
|Causes of weight reduction effects of material substitution on constant stiffness components
Kraftfahrwesen | 2002
|