ANALYSIS AND MODELING OF WEIGHBRIDGE CONSTRUCTION REINFORCEMENT AT PT BUKIT ASAM - Abstract - Keywords - 1 INTRODUCTION - 2 LITERATURE REVIEW

Oct 29, 2026

Coal mining involves multiple interdependent stages, and reliable equipment is essential to avoid failures during production measurement and contractor payment. Weighbridges are used to determine coal mass, but deformation can occur in the main beam construction, reducing performance and requiring timely repair and strengthening. The study analyzes and models weighbridge reinforcement using a finite element method in Autodesk Inventor with specified material properties, loading, meshing, and Z-axis constraints to assess von Mises stress and displacement results.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages7

Reading Time18 min

AccessFree to download

Abstract

1 INTRODUCTION

2 LITERATURE REVIEW

2.1 Weighbridge

2.2 Software of Autodesk Inventor

2.3 Structural Analysis on Autodesk Inventor

ANALYSIS AND MODELING OF WEIGHBRIDGE CONSTRUCTION REINFORCEMENT AT PT BUKIT ASAM Praja Dilla Atos* Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, South Sumatera, Indonesia, Indonesia ABSTRACT Coal mining is a process that consists of several stages, and each stage must be passed asan inseparable part of the other stages. One of the important stages in the coal mining process is the weighing process used to measure the achievement of coal production and as a transactional tool. The weighing of coal is done using a bridging scale. The importance of the role in mining productivity must have strived for no failure in its main components, one of which is the weighbridge construction, where several occurrences of deformation occur in the main beam construction. Repair and strengthening efforts are carried out to overcome the deformation problems based on analysis and modeling using the softwarebased Finite Element Method. The material used is modeled using the Finite Element Method with loading FA = 41,618.18 N, FB = 51,087.56 N, and FC = 26,203.35 N towards the Z axis ST52-3 with Density 7,850 g/cm3, Yield Strength 345 Mpa, Tensile Strength 560 Mpa. The meshing of 946,278 elements and 1,728,745 nodes. Construction analysis using finite element-based software Inventor 2019. The simulation results can be concluded that the greatest von mises stress occurs in the direction of the Z axis with a value of 184 MPa, and the largest displacement occurs in the direction of the Z vector with a value of 7.98 mm. Keywords: Weighbridge, FEM, Autodesk Inventor, von mises stress, displacement. 1 INTRODUCTION PT Bukit Asam always strives to increase coal production every year. One of the efforts made is to increase the carrying capacity of dump trucks from 20 tons to 30 tons. Mining contractors in each mining area carry out the mining process itself. In the case of contractor payments, it is calculated from the weight of the coal transported by dump truck from the front area to the stockpile area. The weighing of coal haulage is carried out using a weighbridge. Meanwhile, mining operations that are required to continue producing and will use weighbridges as a measurement tool for production results and payment of contractor tariffs need to be maintained for reliability, and repairs must be carried out in a fairly short time without disrupting production. 2 LITERATURE REVIEW 2.1 Weighbridge A weighbridge is a tool consisting of several components arranged so that it can be used to measure the mass ofa light vehicle unit to a heavy vehicle both in unloaded and unloaded conditions. According to J.L. Cannon and L.G. Kraige in their book "Engineering Mechanics Statics Vol. I 15th Edition", that mass is a measure ofthe inertia of a body, which is its resistance to a change of velocity. Mass can also be considered a body's quantity of matter. The mass ofa body affects the gravitational attraction force between it and other bodies. This force appears in many applications in statics. To carry out its function, a set of weighbridges generally consists of several main components, including a foundation, platform, and electronic instruments such as load cells, weighing indicators, and junction boxes. In general, the working principle of the weighbridge is that when the vehicle enters and is above the platform, the load cell will directly detect the mass or compressive force resulting from the reaction on the platform pedestal and then convert it into electric current or voltage. The electric current or voltage generated is not always constant. And tends to fluctuate following changes in the condition of the vehicle being weighed. Furthermore, the electric current or voltage will be sent to the weighing indicator tobe processed on digital analog to become a scale value or digital number from the scales. 2.2 Software of Autodesk Inventor Autodesk Inventor is a software product developed by a

FAQs

What problem does the study address regarding the weighbridge at PT Bukit Asam?

Deformation occurrences in the weighbridge main beam construction that require repair and strengthening to maintain reliability and avoid production disruption.

How is the analysis performed in the study?

Using a finite element method model implemented with Autodesk Inventor 2019, including material property definition, loading, meshing, and structural analysis for stress and displacement.

What do the results indicate about stress and displacement?

The greatest von Mises stress occurs along the Z axis with a peak value of 184 MPa, while the largest displacement occurs in the Z direction with a value of 7.98 mm.

Oct 29, 2026

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