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About 8,607 papers for “structural design calculation”

Numerical design calculation of structural steel welds

Abhishek Ghimire, František Wald, Martin Vild et al. · 2023

This paper focuses on designing fillet welds made from high-strength steel (HSS). It presents a numerical design calculation (NDC) method for assessing weld strength using the regular inclined shell element model (RISEM) in the finite element method (FEM). NDC uses FEM to design joints according to standardised procedures. The inclined shell element in RISEM represents the geometry and stiffness of welds, controlling its stresses in the plane. The paper recommends using a common inclined shell element with rigid links to accurately represent the geometry and rigidity of fillet welds. A new strength criterion is proposed based on stresses on the inclined shell element, using maximum equivalent stress as an indicator. Validation of the method is confirmed by comparing RISEM and test results using finite element (FE) simulation. Additionally, the weld resistance computed from the equation in prEN 1993-1-8:2020 is also in good agreement.

Cited by 1Open access

Household Induction Cookers: Calculation and Design of Structural Elements

Pantelyat, M. G., Hryshchuk, Yu. S., Chepeliuk, O. O. et al. · Електронний архів наукових та освітніх матеріалів КПІ ім. Ігоря Сікорського (КПІ ім. Ігоря Сікорського) · 2021

A technique for calculation and design of main structural elements of household induction cookers – inductors and magnetic cores is proposed. The technique consists of two stages. The first stage has been developed on the basis of engineering methods for calculating copper inductors of industrial induction heaters, taking into account the design features and operating modes of induction cookers, done in steps such as selection of geometrical dimensions of the inductor, calculation of main electrical and energy indicators of the inductor, calculation of the system ”inductor-dishes”, determination of the number of turns of the inductor and calculation of the width of the turn. The second stage represents an engineering approach for the calculation and design of magnetic cores made of MnZn ferrites, done in steps such as choice of material for the manufacture of magnetic core rods, choice of geometric dimensions of ferrite rods, calculation of the mass of the magnetic core and calculation of power losses in the magnetic circuit. The calculation results and designs of the inductors and magnetic cores with respect to a number of modes of heating of dishes of various geometric sizes are presented and analyzed. The developed techniques and the results obtained on its base are supplemented and supported by preliminary numerical analysis of the electromagnetic field distribution in induction cookers and heated dishes as well as by experimental research on the workbench developed. Conceptual designs of induction cookers developed by using the proposed approaches illustrate the techniques presented. The developed techniques can be used in the process of research and design of structural elements of household induction cookers, as well as in the educational process for the preparation of Bachelors and Masters in relevant educational programs.

Cited by 0Open access

Structural Design and Hydrodynamic Coefficient Calculation of Observation-class ROVs

Guo Jiawei, Chuan Liu, Yuan Shifeng et al. · Journal of Engineering Research and Reports · 2023

Remote Operated Vehicle (ROV) can replace humans in inspecting and maintaining water facilities such as reservoirs and dams. Connected to surface support equipment through umbilical cables, the umbilical cable allows the operator to control the ROV's operations remotely from a mother ship or shore. Using the ROV as an underwater operational platform, precise and efficient underwater inspection and repair operations for hydraulic structures can be achieved by mounting underwater mechanical arms, pan-tilt cameras, cleaning and cutting devices, etc. This paper designs an observation-class ROV, carries out structural design of the ROV body, selects and models sensors and actuators according to actual needs, and provides a method for using the FLUENT software to perform hydrodynamic calculations and obtain hydrodynamic coefficients based on the model.

Cited by 0Open access

Nonlinear calculation of structural elements according to transforming design schemes

І. O. Kuznetsova, Dmitri Berezhnoi, Duaa Ekhsayem et al. · E3S Web of Conferences · 2023

An approach to the calculation of the processes of structural elements deformation and their environments in the case of a complex phased erection of building objects is proposed. On the basis of consistent equations of the geometrically nonlinear theory elasticity within the finite element approach to the geometry description, a technique for solving three-dimensional statics problems of concrete and reinforced concrete structural elements is implemented. On the basis of calculation by transforming calculation schemes new computational models of spatial elements deformation of building structures during their interaction with soil media have been developed. On the basis of the proposed methods the underground elements deformation problem of building structures was solved when carrying out technological measures related to the local strengthening of already erected underground facilities. The calculation results showed that the use of the proposed methodology makes it possible to implement the determination of the stress-strain state and displacement fields in the phased construction zone in a single design scheme.

Cited by 0Open access

Structural Design and Calculation of KTY4000 Power Head Boring Machine

Baohong Zhang · 2010

The bored pile foundations of the Jiashao Bridge are constructed by the KTY4000 Power Head Boring Machine.The boring stem of the machine is driven by the power head and the boring bit is in turn rotated by the boring stem to discharge the boring slag from bored hole by the reverse circulation air lifting method.The machine is mainly composed of the power head,sliding transverse beams,boring mechanism(including chassis,rig and sealing chassis),rigging device,cabinet,hydraulic station and electric control system.The SoildWorks is used to establish models and from the ANSYS finite element calculation,it is known that the maximum stress and deformation of the rig is respectively 161.65 MPa and 2.26 mm,the maximum stress and deformation of the boring stem is respectively 173.31 MPa and 8.28 mm and the results thereof can all satisfy the design requirements.As proved by practice,the boring machine can be applied to the construction of large diameter bored pile foundations under various complicated geologic conditions.

Cited by 0

Structural calculation analysis and design of a Towering concrete building

Haibo Ren · IOP Conference Series Earth and Environmental Science · 2021

Abstract This Towering building is a concrete tower with a height of 199. 10m and an octagonal plane, with a complex structure. The structure is calculated as a whole through the programs of two different mechanical models, the calculation results are relatively close, and the control indicators meet the requirements of relevant specifications and regulations. This article introduces and analyzes the structural system, structural calculation and analysis methods, seismic performance objectives, and overall calculation results of the project, and details the design of the steel tower.

Cited by 1Open access

Calculation procedure for design structural loads on large berth-connected ships

I.A. Svistunov, В.В. Платонов, Vladimir Tryaskin · TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE · 2021

Object and purpose of research. This paper discusses large berth-connected ships. The purpose of this study was to develop a calculation procedure for design structural loads on the ships of this class. Materials and methods. Probabilistically determined model of ice load calculation for ice-compression scenario. Statistical data on thermal and ice regimes. Main results. Assessment procedure for local ice compression loads on berth-connected ships based on the probabilistically determined model intended for introduction to Russian Maritime Register of Shipping (RS) rules for classification and con-struction of sea-going ships. Conclusion. This paper presents the procedure and main provisions of ice load assignment concept for berth-connected ships, used to develop the draft of RS Rules for ice strength of large berth-connected ships.

Cited by 0Open access