Next Article in Journal
Novel Composite Electrolytes of Zr0.92Y0.08O2-α(8YSZ)-Low Melting Point Glass Powder for Intermediate Temperature Solid Oxide Fuel Cells
Next Article in Special Issue
Numerical Simulation and Experimental Investigation of Cold-Rolled Steel Cutting
Previous Article in Journal
Synthesis of Non-Stoichiometric (TiNb)C0.5 with High Hardness and Fracture Toughness under HTHP
Previous Article in Special Issue
Effects of Cutting Edge Microgeometry on Residual Stress in Orthogonal Cutting of Inconel 718 by FEM
Open AccessArticle

A Consistent Procedure Using Response Surface Methodology to Identify Stiffness Properties of Connections in Machine Tools

1
Department of Mechanical Engineering, Faculty of Engineering, University of the Basque Country UPV/EHU, Plaza Ingeniero Torres Quevedo 1, E-48013 Bilbao, Spain
2
IK4-IDEKO, Arriaga Kalea 2, E-20870 Elgoibar, Spain
*
Author to whom correspondence should be addressed.
Materials 2018, 11(7), 1220; https://doi.org/10.3390/ma11071220
Received: 30 May 2018 / Revised: 3 July 2018 / Accepted: 11 July 2018 / Published: 16 July 2018
(This article belongs to the Special Issue Machining—Recent Advances, Applications and Challenges)
Accurate finite element models of mechanical systems are fundamental resources to perform structural analyses at the design stage. However, uncertainties in material properties, boundary conditions, or connections give rise to discrepancies between the real and predicted dynamic characteristics. Therefore, it is necessary to improve these models in order to achieve a better fit. This paper presents a systematic three-step procedure to update the finite element (FE) models of machine tools with numerous uncertainties in connections, which integrates statistical, numerical, and experimental techniques. The first step is the gradual application of fractional factorial designs, followed by an analysis of the variance to determine the significant variables that affect each dynamic response. Then, quadratic response surface meta-models, including only significant terms, which relate the design parameters to the modal responses are obtained. Finally, the values of the updated design variables are identified using the previous regression equations and experimental modal data. This work demonstrates that the integrated procedure gives rise to FE models whose dynamic responses closely agree with the experimental measurements, despite the large number of uncertainties, and at an acceptable computational cost. View Full-Text
Keywords: stiffness properties; parameter identification; connections; machine tool; response surface methodology; design of experiments; modal testing stiffness properties; parameter identification; connections; machine tool; response surface methodology; design of experiments; modal testing
Show Figures

Figure 1

MDPI and ACS Style

Hernandez-Vazquez, J.-M.; Garitaonandia, I.; Fernandes, M.H.; Muñoa, J.; Lacalle, L.N.L. A Consistent Procedure Using Response Surface Methodology to Identify Stiffness Properties of Connections in Machine Tools. Materials 2018, 11, 1220.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop