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Improving the load capacity-tare weight ratio of cranes without lowering safety levels

OverviewOverview

TestimonialTestimonial

ChallengeChallenge

To reduce the number of time-consuming tests by using high-quality FE-analysis

To optimize weight and stress in complex welding constructions taking stability into account

To design models using 3-D CAD data

SolutionSolution

An optimum solid web tower profile prevents the need for cost-intensive testing

Developing a new, robust, filigree telescope jib

BenefitsBenefits

By using ANSYS Workbench™ for early analysis, results confirming the feasibility of the project are achieved during development and as construction progresses.

Due to the close correlation between analysis results and the prototype testing results, Liebherr is able to design lightweight cranes with high load-bearing capacities.

Load capacity-tare weight ratio has been improved allowing for lighter, faster more powerful cranes.

“In order to improve the load capacity-tare weight ratio of the cranes without lowering safety levels, engineers must determine exactly how the stress in these complex construction elements is distributed. For many years now, Liebherr has found ANSYS to be a valuable tool for designing lightweight constructions with high load-bearing capacities.

One of the most important aspects of crane construction is safety, thus steel constructions must be 100% reliable. This can only be achieved by using a highly dependable program such as ANSYS.”

Dr. Norbert StangerHead of the Crane Design Department at Liebherr

Liebherr-Werk Biberach GmbH manufactures high-quality tower cranes and driveline components, offering its customers machines of all system and size categories, and complete product lines. Due to the very special construction requirements, and in order to guarantee the quality of its machinery, Liebherralways has focused on manufacturing most of the parts and components it uses in the group’s factories.

LiebherrLiebherr--WerkWerk BiberachBiberach GmbHGmbH

GermanyTower Cranes Industry

www.liebherr.com

Mechanical Solution