Ladder Frame Concept Development through Parametric Beam Modelling Mahindra and Mahindra Limited

Format:

Book

Conference/Event

Author/Creator:

Bhalerao, Mihir, author.

Contributor:

Murugesan, Lakshmanprasad

RS, Jeyevijeyan

Conference Name:

Symposium on International Automotive Technology (2021-09-29 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Body-over-Frame is the primary type of construction used inSUVs, pick-ups and other commercial vehicles in India. In this typeof construction, the body, engine, suspensions etc are mounted onthe ladder frame. Since the frame acts as the skeleton of thevehicle, optimal design of frame at the concept stage of theprogram is critical for meeting all structural performance targets.Frontloading of these targets aids in architecture development andreduces future design modifications. This paper focuses onfrontloading the natural frequency targets by performingconcept-level simulations on the ladder frame even before creationof 3D concept data. A parametric beam model is created based on thereference vehicles. The beam model has been validated withcorrelation of more than 85% compared with CAE and physical testingoutputs of existing vehicles. Modal analysis of frame usingbeam-modelling is extremely fast which enables statistical analysisby performing multiple iterations. A Design of Experiments study issetup to understand the impact of the frame geometry, sections andweight parameters on the natural frequency and mode shapes. Theoutput of this DOE study aids for further optimization of the beammodel. The visualization of mode shapes of concept frame furtherbenefits for defining mounting locations of various systems on theframe. The natural frequency response of the frame should beisolated from natural frequencies of all other major componentsmounted on the frame. The sensitivity analysis and criticalparameter identification assists while modifying existing framedesigns as well as developing novel frames. Design guidelines havebeen established to improve the structural performance of the framewith weight optimization of the frame. Concept-level modal analysishelps in frontloading structural performance targets. Thisaccelerates the overall product development process by reducingdetailed engineering and CAE loops

Notes:

Vendor supplied data

Publisher Number:

2021-26-0416

Access Restriction:

Restricted for use by site license