Rechnereinsatz zum Federentwurf

Meissner, Manfred; Schorcht, Hans-Jürgen

doi:10.1007/978-3-662-08693-3_8

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…Other studies that used CAD software with such limitations include (Chandravanshi & Mukhopadhyay, 2017;Gzal et al, 2017;Nazir et al, 2020;Sahu et al, 2022). Commercial spreadsheet-based engineering software can also be used for the design and analysis of such springs (Schorcht et al, 1998;Liberman, 2006;Meissner & Schorcht, 2007). Computer methods based on genetic algorithms (Cimolai et al, 2022;Bai et al, 2021;Warzecha et al, 2022) are used to create complex spring shapes by optimising for specific criteria.…”

Section: Introductionmentioning

confidence: 99%

A New Method for Generating Virtual Models of Nonlinear Helical Springs Based on a Rigorous Mathematical Model

Michalczyk¹,

Warzecha

Baran

2023

acs

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This paper presents a new method for generating nonlinear helical spring geometries based on a rigorous mathematical formulation. The model was developed for two scenarios for modifying a spring with a stepped helix angle: for a fixed helix angle of the active coils and for a fixed overall height of the spring. It allows the development of compression spring geometries with non-linear load-deflection curves, while maintaining predetermined values of selected geometrical parameters such as the number of passive and active coils and the total height or helix angle of the linear segment of the active coils. Based on the proposed models, Python scripts were developed that can be implemented in any CAD software offering scripting capabilities or equipped with Application Programming Interfaces. Examples of scripts that use the developed model to generate the geometry of selected springs are presented. FEM analyses of quasi-static compression tests carried out for these spring models have shown that, using the proposed tools, springs with a wide range of variation in static load-deflection curves can be obtained, including progressive springs with a high degree of nonlinearity in the characteristics. The obtained load-deflection curves can be described with a high degree of accuracy by power function. The proposed method can find applications in both machine design and spring manufacturing.

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Section: Introductionmentioning

confidence: 99%

A New Method for Generating Virtual Models of Nonlinear Helical Springs Based on a Rigorous Mathematical Model

Michalczyk¹,

Warzecha

Baran

2023

acs

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“…The necessity to use materials within the stated range of strength is based on the functionality springs have to fulfil. Depending on the specifics of the application, a selection of suitable highly elastic materials is mandatory, allowing for large elastic deformations and suitable forms [2,3].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Bending Parameters on the Springback Behavior of Ultra-High Strength Spring Strips

Richter

Reuther

Müller

et al. 2018

MSF

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Abstract. The spring industry has to process ultra-high strength spring strips of the steel grade 1. . Springback during bending is a limiting factor for resource-efficient production processes in the so-called stamping bending technology. This paper reports a mainly experimental investigation on the influence of bending parameters on the evolving springback of spring strips of the grade 1.4310 with tensile strengths TS = 1500-1800 MPa.

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“…They follow two concepts which are a) A partial disablement of the deflection of spring elements b) The impact of constraints under deflection. Examples for concept a) are given by multi-layer leaf springs [2] and barrel springs [2], respectively. Recent developments of leaf springs, which are made up by fibre reinforced plastics (FRP), utilize concept b), e.g.…”

Section: Introductionmentioning

confidence: 99%

An Approach for the Systematic Development of Progressive Light Weight Spring Element Concepts in Vehicle Constructions

Knorre

Brandt

2017

KEM

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Commercial vehicles are mostly equipped with pneumatic spring elements which lead to a perfect height levelling and spring rate adjustment under different loading conditions. However, pneumatic springs are not common in light commercial vehicles where passive spring elements, e.g. single- and multi-leaf springs, are still be used. Since those vehicles are covering a wide range of different loads the spring elements frequently exhibit a progressive spring characteristic, i.e. the spring rate is adjusted under deflection as soon as the load is increased. The need for light weight design also relates to light commercial vehicle so that glass fibre reinforced plastic (GFRP) has become a suitable substitute for high strength steel. Furthermore GFRP allows for innovative as well as functionally and technologically improved constructional solutions of progressive spring elements, e.g. the single-leaf spring approach by Schürmann et al [1].However, the above mentioned solution is sometimes rather solitaire and no systematic approach for its genesis exits. Hence, this contribution shows an approach for a more systematic development of progressive light weight spring element concepts in vehicle construction. Different approaches of implementing a progressive spring rate characteristic are presented in the introduction. A simple analytical model of a bending beam considering a variety of boundary conditions has been set up to discuss the effect of bearing stiffness on the spring rate.The model serves as a basis for a kind of toolbox for a more systematic approach for the development of the desired progressive spring elements. It allows to identify and to select a balanced concept for a progressive light weight spring element which also considers the application of the appropriate spring material at any specific part of the construction.

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Rechnereinsatz zum Federentwurf

Cited by 3 publications

References 1 publication

A New Method for Generating Virtual Models of Nonlinear Helical Springs Based on a Rigorous Mathematical Model

A New Method for Generating Virtual Models of Nonlinear Helical Springs Based on a Rigorous Mathematical Model

Investigating the Influence of Bending Parameters on the Springback Behavior of Ultra-High Strength Spring Strips

An Approach for the Systematic Development of Progressive Light Weight Spring Element Concepts in Vehicle Constructions

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