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Open research questions in Engineering Structural Analysis Methods

37 gap statements mined from Engineering Structural Analysis Methods papers in our 4.5M-paper local library, which holds 446 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The experimental results are limited to a specific hole expansion test setup.

    Numerical Prediction of Stretch Flangeability of DP600 Steel Sheets Using Different Material Models · 2026 · DOI

  • Further studies can investigate the applicability of the proposed material models to other steel types and forming operations. The effects of other parameters such as temperature and strain rate on stretch flangeability can be explored.

    Numerical Prediction of Stretch Flangeability of DP600 Steel Sheets Using Different Material Models · 2026 · DOI

  • The lack of understanding of the relationship between test pressure and cyclic durability. The need for a more comprehensive evaluation of the test batch quality of metal cylinders.

    Experimental Evaluation of Test Batch Quality of Metal Cylinders Using Full-Scale High-Pressure Hydraulic Tests. Part 1. Results of Full-Scale Static Tests · 2026 · DOI

  • From a reliability perspective, future work may consider non-Gaussian probabilistic models, correlated uncertainties, and global sensitivity analysis methods to better capture complex stochastic behaviors in bolted joint systems.

    Experimental investigation and reliability-based optimization of the nut factor in bolted joints considering friction coefficient, surface roughness and material hardness · 2026 · DOI

  • However, expansion is not completely eliminated, indicating that geometric modification alone is insufficient to achieve full This study was funded by SIO Automotive A.

    Forming Analysis of an Inner Tie-Rod End Stud Using Finite Element Modeling and Experiments · 2026 · DOI

  • Future research will explore the staged combination of dynamic/static rods, varying cutting-mucking ratios under different depths, and DEM-CFD coupling to capture the multiphase effects of groundwater and foam.

    Enhancing performance of quasi-rectangular pipe jacking: the role of static and dynamic stirring rod configurations on RTBM via a discrete-continuum coupling analysis · 2026 · DOI

  • The lack of a general analytical approach for calculating the force mode for parts with a conical cavity. The need for a calculation method for reduced pressure in direct extrusion of parts with a conical cavity.

    Calculation of reduced pressure in direct extrusion of parts with a conical cavity by the energy method of power balance · 2026 · DOI

  • There is a need to evaluate the mechanical properties of orifice openers with different dimensions. There is a lack of understanding of the performance of newly developed orifice openers.

    In vitro evaluation of mechanical properties of newly developed orifice openers · 2026 · DOI

  • The lack of a comprehensive methodology for computer modeling of the strength of fasteners. The need for a systems approach to computer modeling of the strength of fasteners. The limited application of modern information technologies in materials science.

    Application of modern information technologies to analyze the tensile strength of fasteners · 2026 · DOI

  • The punch pierce requires inspection every 500–800 cycles, while future research should investigate fillet geometry optimization and surface coating effects to further extend punch service life.

    Numerical Method-Based Study on Deformation and Fatigue Life of SKD 11 Dies and Punches · 2026 · DOI

  • The occurrence of spring back in metal plates is a problem that needs to be addressed. The current manufacturing process of safety pins has a high production cost and process duration.

    Pembuatan Peniti Kain, Panjang 50mm, Diameter Kawat 0,5mm, Kapasitas 30 Unit/Jam · 2026 · DOI

  • The analyzed geometric combination (thin spherical cap with dense square perforation and stepped clamping) has not been previously addressed in the accessible literature.

    Analytical-Numerical Stress Analysis and Redesign of Perforated Backing Plates in Industrial Diaphragm Pumps: Degradation of Boundary Conditions and Optimal Ligament Configuration · 2026 · DOI

  • The proposed method has variability due to initial residual stress. A major source of variability is considered to be the residual stress present from manufacturing. The study used a limited number of specimens, with seven bolts prepared with their head heights reduced by constant-current electrolysis.

    Non-destructive Evaluation Method for Clamping Force Condition of Corroded High-Strength Bolts by X-Ray Diffraction Analysis · 2026 · DOI

  • Further study is needed to reduce the variability due to initial residual stress. The proposed method could be applied to other types of bolts and structures. The study could be extended to investigate the effect of other factors, such as temperature and humidity, on the clamping force evaluation.

    Non-destructive Evaluation Method for Clamping Force Condition of Corroded High-Strength Bolts by X-Ray Diffraction Analysis · 2026 · DOI

  • Further studies can be conducted to investigate the effect of other process parameters on joint fatigue performance. The development of new die designs can be explored to further improve the fatigue performance of the joints.

    Joining ultra-high strength steel to aluminum for lightweight vehicles: an electromagnetic self-pierce upsetting riveting study · 2026 · DOI

  • The lack of in-depth stress analysis of threaded connections under complex working conditions. The need for improved design of drill pipe connections to reduce stress concentration and improve sealing performance.

    Performance analysis and structural optimization of drill pipe connections under complex operating conditions · 2026 · DOI

  • There are still some more opportunities worthy of in-depth research, such as insufficient research on CHB of high-strength fasteners for aerospace applications, an insufficient combination of CHB simulation tests with real working conditions, and inspection and testing methods.

    Study on the Performance of Aerospace High-Strength Titanium Alloy TC4 Countersunk Head Bolts for Special Connections in Multi-Working Conditions · 2025 · DOI

  • The lack of standards for fasteners in the mining industry. The limited effectiveness and reliability of current fasteners.

    A Family of Innovative Fasteners for Drill Strings Used in Rotary Drilling in the Copper Mining Industry · 2026 · DOI

  • The extreme combination of components within the tolerance range may result in either a 'loose' or a 'tight' joint. The presence of oil and cleaning agents increases the risk of over-tightening.

    Experimental Investigation of Preloaded Bolted Connections · 2026 · DOI

  • To consider other factors that may influence the occurrence of spring back.

    Pembuatan Peniti Kain, Panjang 50mm, Diameter Kawat 0,5mm, Kapasitas 30 Unit/Jam · 2026 · DOI

  • As there are no guidelines concerning imperfections in the current European Standard EN 1993-3-1, the permissible assembly deviation values were taken as the reference point.

    Analysis of guyed lattice masts considering various types of mast shaft geometrical imperfections · 2019 · DOI

  • The formulation does not account for: cyclic loading effects, bolt pretension and slip behaviour, or failure modes outside the scope of the component method.

    Analytical formulation of a 2+2+1 bolt-row activation model for extended end-plate connections · 2026 · DOI

  • The application of the methodology to other types of fasteners. The evaluation of the effect of other factors on the strength of fasteners. The development of new materials with improved strength properties for fasteners.

    Application of modern information technologies to analyze the tensile strength of fasteners · 2026 · DOI

  • To establish a generalizable relationship between the passive and active phases of the torque-force curve.

    Experimental Investigation of Preloaded Bolted Connections · 2026 · DOI

  • Experimental validation of the results. Extension of the method to other types of materials and geometries.

    Calculation of reduced pressure in direct extrusion of parts with a conical cavity by the energy method of power balance · 2026 · DOI

Most-cited papers in Engineering Structural Analysis Methods

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Open questions raised by papers listed on this page include: (1) The lack of understanding of the relationship between test pressure and cyclic durability (“Experimental Evaluation of Test Batch Quality of Metal Cylinders Using…”, 2026); (2) From a reliability perspective, future work may consider non-Gaussian probabilistic models, correlated uncertainties, and global sensitivity analysis methods to better capture complex stochastic behaviors in bolted joint systems (“Experimental investigation and reliability-based optimization of the nut factor…”, 2026); (3) Future research will explore the staged combination of dynamic/static rods, varying cutting-mucking ratios under different depths, and DEM-CFD coupling to capture the multiphase effects of groundwater and foam (“Enhancing performance of quasi-rectangular pipe jacking: the role of static and…”, 2026); (4) The lack of a general analytical approach for calculating the force mode for parts with a conical cavity (“Calculation of reduced pressure in direct extrusion of parts with a conical…”, 2026); (5) There is a need to evaluate the mechanical properties of orifice openers with different dimensions (“In vitro evaluation of mechanical properties of newly developed orifice openers”, 2026). 37 gap statements have been mined from Engineering Structural Analysis Methods papers in our 4.5M-paper local library, which holds 446 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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