Polymer Injection Forming (PIF) Of Thin-Walled Sheet Metal Parts — Preliminary Experimental Results

2007 ◽  
Author(s):  
Giovanni Lucchetta ◽  
Ruggero Baesso
Keyword(s):  
Sheet Metal ◽  
Experimental Results ◽  
Polymer Injection ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Walled

On the Topology of Sheet Metal Parts

1998 ◽  
Vol 120 (1) ◽  
pp. 10-16 ◽  
Author(s):  
H. Lipson ◽  
M. Shpitalni
Keyword(s):  
Sheet Metal ◽  
Conceptual Design ◽  
Topological Invariant ◽  
Manufacturing Processes ◽  
Qualitative Model ◽  
Topological Properties ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Walled ◽  
Euler Operators

This paper analyzes the topological properties of sheet metal parts represented schematically (zero thickness, zero bend radii). Although such parts are usually non-manifold objects, the paper establishes a general topological invariant f = s + b + e + w − v − gnm + m regarding the number of facets, components, bends, free edges, welds, vertices holes and volumes, respectively. Corresponding Euler operators are derived, providing a basis for a modeling system for sheet metal parts. With this invariant, it is possible to reason about manufacturing processes, such as number of components and arrangement of bend lines and weld lines, using only a single qualitative model of the product. This capability is particularly useful in the preliminary stage of conceptual design. A corresponding topological invariant v − e + f = s + m − gnm is also proposed for general sheet models and thin walled objects.

Modeling and predicting of aeronautical thin-walled sheet metal parts riveting deformation

2016 ◽  
Vol 36 (3) ◽  
pp. 295-307 ◽  
Author(s):  
Zhengping Chang ◽  
Zhongqi Wang ◽  
Bo Jiang ◽  
Jinming Zhang ◽  
Feiyan Guo ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Element Model ◽  
Local Deformation ◽  
Calculation Model ◽  
Content Type ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Walled ◽  
The Impact ◽  
Successive Calculation

Purpose Riveting deformation is inevitable because of local relatively large material flows and typical compliant parts assembly, which affect the final product dimensional quality and fatigue durability. However, traditional approaches are concentrated on elastic assembly variation simulation and do not consider the impact of local plastic deformation. This paper aims to present a successive calculation model to study the riveting deformation where local deformation is taken into consideration. Design/methodology/approach Based on the material constitutive model and friction coefficient obtained by experiments, an accurate three-dimensional finite element model was built primarily using ABAQUS and was verified by experiments. A successive calculation model of predicting riveting deformation was implemented by the Python and Matlab and was solved by the ABAQUS. Finally, three configuration experiments were conducted to evaluate the effectiveness of the model. Findings The model predicting results, obtained from two simple coupons and a wing panel, showed that it was a good compliant with the experimental results, and the riveting sequences had a significant effect on the distribution and magnitude of deformation. Practical implications The proposed model of predicting the deformation from riveting process was available in the early design stages, and some efficient suggestions for controlling deformation could be obtained. Originality/value A new predicting model of thin-walled sheet metal parts riveting deformation was presented to help the engineers to predict and control the assembly deformation more exactly.

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal
Sign in / Sign up

Export Citation Format

Share Document