A Novel Approach for Designing Boltless Connectors - Example on a New Drilling Riser Connector

2021 ◽  
Author(s):  
Eleonore Roguet ◽  
Emmanuel Persent ◽  
Daniel Averbuch
Keyword(s):  
Finite Element ◽  
Design Process ◽  
Load Transfer ◽  
Design Method ◽  
Experimental Tests ◽  
New Product ◽  
Block Type ◽  
Finite Element Analyses ◽  
Novel Approach ◽  
Structural Tests

Abstract A new method which uses elastic and elasto-plastic Finite Element analyses is developed to design a double breech-block type connector. All relevant criteria proposed by API16F are fulfilled. In addition, plastic and bearing criteria have been added to support the use of lugs for load transfer in the connector. The proposed methodology has been applied and validated through experimental tests at different scales and in particular on laboratory specimens and small-scaled connectors. Based on these last structural tests, a safety factor of almost 8 was obtained for the design method on small-scaled connectors. Prototype tests at scale 1:1 allowed the methodology to be fully validated and a new product to be qualified. Certification bodies validated the whole design process, the employed methodology and the new connector.

Study of bolted joint axial stiffness using finite element analyses, experimental tests, and analytical calculations

2020 ◽  
Vol 234 (23) ◽  
pp. 4671-4681
Author(s):  
Raphael Calazans Cardoso ◽  
Brenno Lima Nascimento ◽  
Felipe de Freitas Thompson ◽  
Sandro Griza
Keyword(s):  
Finite Element ◽  
Analytical Method ◽  
High Reliability ◽  
Experimental Tests ◽  
Bolted Joints ◽  
Axial Stiffness ◽  
Bolted Joint ◽  
Finite Element Analyses ◽  
Load Distributions ◽  
Reliable Design

The bolted joints sizing procedures shall adequately match the conditions imposed on the joint in service, to ensure high reliability designs. Therefore, this study aims to analyze the load distributions on the bolt when applying external load on bolted joints. Finite element and extensometry analyses as well as analytical calculations were performed in order to compare the magnitude of the joint overall stiffness, with respect to several available theories. The results acquired through the analytical method prescribed in the VDI 2230 standard as well as the finite element and extensometry analyses obtained great accordance. These results indicate that VDI 2230 standard adequately represents the mechanical behavior of the joint and should be used as a guideline for the reliable design of bolted joints subjected to the loading conditions of the present paper.

Investigations of puncture behaviors of woven fabrics from finite element analyses and experimental tests

2011 ◽  
Vol 81 (10) ◽  
pp. 992-1007 ◽  
Author(s):  
Baozhong Sun ◽  
Yonxin Wang ◽  
Ping Wang ◽  
Hong Hu ◽  
Bohong Gu
Keyword(s):  
Finite Element ◽  
Experimental Tests ◽  
Woven Fabrics ◽  
Finite Element Analyses

Design synthesis of non-symmetrically loaded high-performance disc brakes Part 1

2001 ◽  
Vol 215 (2) ◽  
pp. 101-109 ◽  
Author(s):  
M Tirovic ◽  
G Ali
Keyword(s):  
Finite Element ◽  
Design Process ◽  
Thermal Effects ◽  
High Performance ◽  
Finite Element Analyses ◽  
Design Synthesis ◽  
Critical Design ◽  
Disc Brakes ◽  
Design Requirements ◽  
Manufacturing Methods

Wheel-mounted disc brakes are exposed to severe non-symmetrical mechanical and thermal loads. The paper describes the design process for two high-performance, hub-mounted discs of different size and duty. The development has resulted in two very successful but fundamentally different hub designs and manufacturing methods. Initially, finite element analyses used in the design optimization were mainly concentrated on bulk thermal effects. Recently, in order further to improve the design process, analyses have included macro thermal effects, providing valuable results, particularly related to the prediction of disc permanent coning, one of the most critical design requirements.

Mechanical behavior of pressurized composite pipes made of various materials

2020 ◽  
Vol 62 (4) ◽  
pp. 389-394
Author(s):  
İsmail Yasin Sülü ◽  
Şemsettin Temiz
Keyword(s):  
Finite Element ◽  
Carbon Fiber ◽  
Radial Strain ◽  
Experimental Tests ◽  
Industrial Applications ◽  
Layered Composite ◽  
Finite Element Analyses ◽  
Reinforced Composite ◽  
Failure Loads ◽  
Composite Pipes

Abstract In this study, multi-layered composite pipes with varied orientation angles and subjected to internal pressure were investigated by using the 3-D finite element method (FEM) and through experimental tests. The composite pipes were made of E-glass and T300/934 carbon fiber. The studies were carried out experimentally, analytically and numerically. The T300/934 carbon fiber reinforced composite pipes and E-glass reinforced composite pipes were given numerical model codes via ANSYS 14.5 software. These models were then compared with analytical results in the literature and with the experimental results. Finite element analyses (FEA) were carried out to predict failure loads. Each layer of the composite pipes was numerically examined from various orientation angles. Hoop and shear stress wereobtained numerically for each layer. Radial strain and radial stress were achieved in the radial direction of the composite pipes. Shear extension coupling was considered because the layup angles with + θ and - θ layers were in varied radii. Subsequently, the effects of the orientation angles were examined for all models. Moreover, it was found that an embedded adhesive joint is important for industrial applications.

Design of Chassis Frame for All-Terrain Vehicle for Educational Purposes

2014 ◽  
Vol 695 ◽  
pp. 742-745
Author(s):  
Muhammad Zahir Hassan ◽  
John Hendrie ◽  
Abdul Munir Fudhail ◽  
Mohd Azli Salim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Process ◽  
Main Part ◽  
Applied Load ◽  
Maximum Stress ◽  
Design Method ◽  
Element Analysis ◽  
Proper Design ◽  
It Structure

All-terrain vehicle is famously used for various purposes. The design of the chassis of this vehicle is critical in determining the overall strength. In this paper, the design chassis frame for the use of all-terrain vehicle (ATV) is presented. In designing the chassis frame, a proper design method was employed. Finite Element Analysis (FEA) was utilized to determine the maximum stress and displacement of the frame when a particular load is applied onto it. Structure modifications need to be done if the chassis frame could not sustain the applied load. After the design process is completed, the fabrication of the frame is conducted by students of the engineering faculty. The fabricated frame will be used as the main part for a project of which a complete ATV will be developed. The main purpose of the project is to instill the interest among the student in engineering through the application of classroom.

scholarly journals Finite Element Model-based Design of Stiffened Welded Plated Structures Subjected to Combined Loading

2021 ◽  
Author(s):  
Balázs Kövesdi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Design Process ◽  
Design Method ◽  
Element Model ◽  
Steel Bridges ◽  
Combined Loading ◽  
Material Models ◽  
Box Section ◽  
Model Based

Resistance calculation of steel bridges with orthotropic plates subjected to combined loading situation (bending moment, shear and transverse forces called as M-V-F interaction) can be challenging for designers due to the interactive stability behavior and combined buckling phenomena. The current EN 1993-1-5 standard provides a design method using analytical design equations checking the pure (bending, shear and patch loading) and interaction resistances separately. This design process is complex in the case of steel bridges, especially for box-section bridges having numerous longitudinal and transverse stiffeners. Finite Element Model (FEM) based design can provide suitable design tools for efficient and accurate resistance calculation of these structure types. However, within the modelling process there are numerous questions to be answered regarding material models and imperfections to ensure required accuracy and safe resistance. A new standard prEN 1993-1-14 is currently under development which will provide design rules to finite element model-based design of steel structures, having the aim to answer the main part of the above mentioned questions and standardize the design process. The current paper discusses and demonstrates the methodology of the FEM based design for welded plated structures. Benchmark example for a Hungarian steel box-section bridge subjected to combined loading situation is presented. Effect of different meshing, imperfection combinations and material models are presented and evaluated in the paper. Efficiency of the numerical model and the obtained resistance on the input parameters are evaluated and design example is given for the application of the FEM based design method.

Seismic assessment of a historical masonry mosque by experimental tests and finite element analyses

2014 ◽  
Vol 19 (1) ◽  
pp. 158-164 ◽  
Author(s):  
Ferit Cakir ◽  
Burcin S. Seker ◽  
Ahmet Durmus ◽  
Adem Dogangun ◽  
Habib Uysal
Keyword(s):  
Finite Element ◽  
Experimental Tests ◽  
Seismic Assessment ◽  
Finite Element Analyses ◽  
Historical Masonry

scholarly journals Analysis of cold-formed steel rectangular hollow flange beams

2021 ◽  
Vol 16 (1) ◽  
pp. 58-64
Author(s):  
Nathalie Eid ◽  
Attila László Joó
Keyword(s):  
Finite Element ◽  
Numerical Study ◽  
Experimental Tests ◽  
Finite Element Analyses ◽  
Ansys Software ◽  
Current Standard ◽  
Bending Capacity ◽  
Cold Formed Steel ◽  
Thin Walled ◽  
Flange Beams

AbstractThis paper presents the results of a theoretical-numerical study of laterally-restrained thin-walled steel rectangular hollow flange beams subjected to bending, shear and bending and shear interaction. Finite element analyses were carried out by using ANSYS software, and validated by previous experimental tests. Furthermore, the effect of intermediate stiffeners was investigated, where the improvement percentage in bending capacity was 4.4%. Additionally, all the corresponding outcomes were calculated according to EN 1993-1-3. The results showed that current standard rules tend to be somewhat conservative in both bending and bending and shear interaction cases, while they are not quite accurate in shear case.

Study of beam–soil interaction using finite element and centrifugal models

1982 ◽  
Vol 19 (3) ◽  
pp. 345-359 ◽  
Author(s):  
D. Leshchinsky ◽  
S. Frydman ◽  
R. Baker
Keyword(s):  
Finite Element ◽  
Load Transfer ◽  
Finite Element Analyses ◽  
Finite Element Program ◽  
Buried Structures ◽  
Centrifuge Models ◽  
Element Program ◽  
Principal Directions ◽  
Centrifugal Model ◽  
Nonlinear Elastic

A comparison is presented between the results of centrifugal model tests and finite element analyses for the problem of load transfer to a rigid tie beam buried in sand. The finite element program utilized a nonlinear elastic (hyperbolic) soil constitutive relation, obtained from tests in simple shear. It was found that, for this particular type of problem, the finite element solution may reasonably represent the interaction between the beam and the surrounding soil. It is pointed out that this agreement does not ensure that the use of such finite element analyses would be justified in problems involving rotation of principal directions, and local unloading.The effect of compaction of the fill was investigated, and it was found that compaction leads to an increase in load transferred to the beam above that which is due to density effects alone.Key words: finite elements, centrifuge, models, soil–structure interaction, buried structures.

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