Finite element model updating of smart structures with direct updating algorithm

Verma, Shrish; Kango, Saurabh; Bagha, Ashok Kumar; Bahl, Shashi

doi:10.1088/1402-4896/ac64d3

Cited by 9 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cantilever boundary condition is assumed for testing. The accelerometer is mounted at the optimal location [28]. The external excitation with the help of a modal or impact hammer is applied at all the nodes of the specimen.…”

Section: Experimental Modal Analysis (Ema)mentioning

confidence: 99%

“…In this section, the direct updating algorithm is proposed to update the mass and stiffness matrices of the simulated finite element model of the microwave welded lap joint cantilever beam. The updated mass and the stiffness matrices can be calculated as follows [16,28,67,68],…”

Section: Finite Element Model Updating Of a Microwave Welded Lap Join...mentioning

confidence: 99%

“…Chippa et al [27] proposed a direct updating method on a 5-degree of freedom spring-mass system to remove the discrepancies present in the elastic properties of the spring. Shivam et al [28] successfully implemented the direct updating algorithm to update the optimal location of the piezoelectric sensors on the cantilever beam structure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite element model updating of microwave welded lap joint with direct updating algorithm

Bagha¹,

Tiwari²,

Kumari³

et al. 2022

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Microwave joining is a non-conventional joining method that can be used to join bulk metals. Different types of joints such as butt-joint, lap joint, etc can be successfully joined with this novel green technique of joining. In this paper, a domestic microwave oven having a power output of 700W, frequency of 2.45 GHz, and capacity of 25L is used to weld the SS202-SS202 and SS304-SS304 bulk metals. To characterize the lap joints Vicker’s hardness test and SEM of the welded specimens are carried out. The experimental modal analysis is used to measure the experimental eigenvalues and eigenvectors of the welded lap joints. The finite element method has been used to develop the simulated finite element model of the microwave welded joints. The developed finite element model may be very beneficial to predict the dynamic characteristics of the welded structures. However, the finite element method is a numerical tool that gives approximate results. The finite element modeling of the structures depends upon various uncertain factors such as structural material properties, dimensions, boundary conditions, etc Due to these uncertainties in the simulated finite element model, there is always an error between the simulated and experimental observations. In this paper, a lap joint of bulk metals is fabricated by using microwave hybrid heating and a finite element model updating technique such as a direct updating algorithm is proposed to update its simulated finite element model. The objective is to update the simulated mass and the stiffness matrices of the microwave welded lap joint. The experimental modal analysis is used to measure the natural frequencies of the lap joint specimen experimentally. It is observed that the direct updating algorithm can successfully update the simulated finite element model of the welded joints and reduces the error between the simulated and experimental natural frequencies. It is found that the maximum error between the predicted and measured natural frequencies reduces to 0.56% by using the proposed algorithm for welded joints.

show abstract

Section: Experimental Modal Analysis (Ema)mentioning

confidence: 99%

Section: Finite Element Model Updating Of a Microwave Welded Lap Join...mentioning

confidence: 99%

See 1 more Smart Citation

Finite element model updating of microwave welded lap joint with direct updating algorithm

Bagha¹,

Tiwari²,

Kumari³

et al. 2022

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…24 The direct methods are a one-step method that directly updates stiffness and mass matrices. Although direct methods have been used in many cases, [25][26][27] iterative methods, such as sensitivity-based methods 28 and dynamic perturbation method, 29 are more popular because of their ease of implementation. 30 In this method, the error between the experimental data and the initial model is determined using an objective function, and then the function is minimized by different optimization methods to obtain the updated model with the least error, in a way that the optimal value of the finite element model (FEM) parameters is achieved.…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of steel cantilever beams based on connection behaviour using DIC technique and improved hybrid PSO algorithm

Khaloo

Amirahmadi

2023

Structural Health Monitoring

View full text Add to dashboard Cite

Cantilever beams can have various behaviour depending on the details of the connection. Partially-fixed connections have a different performance from conventionally-fixed connections, in which the exact information is not available. In this paper, using the finite element model updating (FEMU) of a steel cantilever beam, the support conditions of a partially-fixed connection and the behaviour of the beam are investigated. The FEMU is utilized as an appropriate technique for structural health monitoring, which requires the use of data acquisition methods from the structure. In this research, instead of using discrete sensors, displacement and strain information are continuously measured from the beam surface using the digital image correlation (DIC) method. The difference between the initial model and the data extracted from the DIC is determined by a cost function. A hybrid method called Powell particle swarm optimization is used to minimize the cost function. This method includes particle swarm optimization (PSO) as a global search technique and Powell optimization as a local search technique; the hybrid method achieves better performance by combining the two methods. A dynamic inertia weight is presented to improve the performance of the PSO algorithm. Abaqus software and Python programming have been used to carry out the FEMU process. Finally, the amount of rotation and displacement of support are calculated, and the dependency of beam behaviour on each of the variables is investigated. This method yields acceptable convergence of the results and can be extended to study other structural components.

show abstract

“…They predicted and measured the vibrations by using piezoelectric patches and H ∞ and μ-synthesis controllers are used in vibration suppression. A simulation and experimental model of a flexible cantilever plate was prepared by [13]. They described the optimal location of the piezoelectric patches by taking the performance of the LQR controller.…”

Section: Introductionmentioning

confidence: 99%

Sensing and control the static deflection of a cantilever beam by using piezoelectric patches

Kumar,

Bagha,

Singh

et al. 2023

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

Different mechanical structures when comes under static and dynamic loadings then they respond. It is very important to sense it so that the dynamic behavior of the structure in terms of natural frequencies, its mode shapes, and viscous damping coefficients can be successfully predicted or measured. The accurate prediction of the dynamic response of the oscillating structure always plays an important role to design its physical parameters. However, in this paper, the simulated and experimental study is conducted to accurately sense the static deflection of the cantilever beam by using piezoelectric patches. The accurate prediction of the static deflection of the beam and its control through piezoelectric patches is the novelty of the present work. Mostly, the finite element model of the beam is developed to predict its dynamic behavior. The finite element modeling provides an approximate solution. In this regard, the finite element model updating technique such as the direct updating algorithm is used in this study to correct the simulated finite element model of the beam. The updated simulated finite element model is then used to predict the accurate value of the static deflection. It is observed that the maximum percentage error between the predicted and measured static deflection is 29.1 %. The updated simulated finite element model is also used to design the controller. The direct output feedback controller is developed and it is found that the static deflection of the beam has been reduced by 46.65 %.

show abstract

Finite element model updating of smart structures with direct updating algorithm

Cited by 9 publications

References 29 publications

Finite element model updating of microwave welded lap joint with direct updating algorithm

Finite element model updating of microwave welded lap joint with direct updating algorithm

Performance assessment of steel cantilever beams based on connection behaviour using DIC technique and improved hybrid PSO algorithm

Sensing and control the static deflection of a cantilever beam by using piezoelectric patches

Contact Info

Product

Resources

About