Design of welded products
High demands on product quality and speed in product development are becoming increasingly important competitive factors. For designers, it is important, for example, to quickly perform rough calculations and convey knowledge to the customer about how welded structures behave under different loads.
The course provides participants with basic knowledge of modern methods for estimating the strength of welded joints in both statically and fatigue-loaded welded products. The first day is devoted to reviewing the basic principles of strength theory, with a specific focus on welded structures. The course then covers design considerations related to various factors, including fatigue, sizing, welding classes, residual stresses, and deformations.
A significant portion of the course deals with the structural design of welded products, and several examples of good and bad design solutions are brought up for collective discussion. Participants are welcome to bring their own design problems to the course.
Prerequisites: equivalent to at least a 3-year high school level and basic knowledge in strength of materials.
Program:
Day 1: Various welding methods. Selection of welding method, base material, and filler material. Welding symbols on drawings with practice. Welding standards and inspection methods in welding. Design for automated welding.
Day 2: Basic strength of materials. Forces/Moments. Analysis of trusses and beams. Different types of strength. Torsion (Closed/solid cross-sections compared to open, thin-walled). Structural design of welded products. Corrosion, Exercises, Discussions.
Day 3: Design of statically loaded welded products. Design of welded joints. Dimensioning philosophy. Standards in the field. Calculation methods for statically loaded welded joints. Instability. Brittle fracture. Laminar tearing. Exercises, Discussions.
Day 4: Design of welded products subjected to fatigue. Welding residual stresses/deformations. Fatigue-loaded welded joints. Varying stresses. Enhancing fatigue strength. Examples of fatigue-loaded joints, Exercises, Discussions.