Finite Element Model Tuning Using Measured Mass Properties and Ground Vibration Test Data

Pak, Chan-gi

doi:10.1115/1.2981092

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…Twist locks are provided to hold the containers safely and rigidly on the platform of the vehicle or on the base of trailer. The twist lock locations on the platform, the load pattern inside the containers, load intensity, location of centre of gravity, the wheel base, self-weight of the platform, axle load distribution, approach and departure angles, ramp angle of the vehicle, trailer length, front & rear overhangs, vehicle width or height form the most important deign constraints of the chassis mounted platform [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of Chassis Mounted Platform Design for Heavy Vehicles

Deulgaonkar¹,

Matani²

2014

Int. J. Vehicle Structures and Systems

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Hand calculations, finite element (FE) analysis and experimental validation of chassis mounted platform design for defence and commercial off-road vehicles have been attempted in this work. The work was commenced with the thorough study of platform configuration, loading pattern, platform mount location & configuration on the vehicle chassis and relevant vehicle characteristics. Calculation of section modulus, shear force and bending moment of various structural members under specified loading has been carried out before proceeding with the FE modeling and analysis of platform. FE model of the chassis mounted platform has been made using shell elements and the boundary conditions have been imposed based on the loading pattern with an assumption of rigid vehicle chassis. Static and gradient analyses of the platform have been carried out for full scale and reduced scale prototype FE models. Experimental strain measurement at critical locations under different static and gradient loads has been carried out for design validation of chassis mounted platform using the scaled prototype. Close correlation has been found between the experimental stress values and FE stress analysis results for static and gradient load conditions. From the entire load tests conducted, it is observed that the strain values in rear portion are less as compared with those in front and mid portions of the platform in-spite of the rear overhang provision.

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Section: Introductionmentioning

confidence: 99%

Development and Validation of Chassis Mounted Platform Design for Heavy Vehicles

Deulgaonkar¹,

Matani²

2014

Int. J. Vehicle Structures and Systems

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“…[9][10][11] There are two optimization algorithms adopted in NASA Dryden's MDAO tool: the traditional gradient-based algorithm 12 and the genetic algorithm. Gradient-based algorithms work well for continuous design variable problems, whereas GAs can handle continuous as well as discrete design variable problems easily.…”

Section: Structural Dynamic Model Tuning Proceduresmentioning

confidence: 99%

Updating the Finite Element Model of the Aerostructures Test Wing Using Ground Vibration Test Data

Lung

Pak

2009

50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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Improved and/or accelerated decision making is a crucial step during flutter certification processes. Unfortunately, most finite element structural dynamics models have uncertainties associated with model validity. Tuning the finite element model using measured data to minimize the model uncertainties is a challenging task in the area of structural dynamics. The model tuning process requires not only satisfactory correlations between analytical and experimental results, but also the retention of the mass and stiffness properties of the structures. Minimizing the difference between analytical and experimental results is a type of optimization problem. By utilizing the multidisciplinary design, analysis, and optimization (MDAO) tool in order to optimize the objective function and constraints; the mass properties, the natural frequencies, and the mode shapes can be matched to the target data to retain the mass matrix orthogonality. This approach has been applied to minimize the model uncertainties for the structural dynamics model of the Aerostructures Test Wing (ATW), which was designed and tested at the National Aeronautics and Space Administration (

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Component data assisted finite element model updating of composite flying-wing aircraft using multi-level optimization

Zhao

Gupta²,

Regan³

et al. 2019

Aerospace Science and Technology

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Finite Element Model Tuning Using Measured Mass Properties and Ground Vibration Test Data

Cited by 10 publications

References 11 publications

Development and Validation of Chassis Mounted Platform Design for Heavy Vehicles

Development and Validation of Chassis Mounted Platform Design for Heavy Vehicles

Updating the Finite Element Model of the Aerostructures Test Wing Using Ground Vibration Test Data

Component data assisted finite element model updating of composite flying-wing aircraft using multi-level optimization

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