Results 41 to 50 of about 1,074,745 (290)

Research on Thermal Error Modeling of Motorized Spindle Based on BP Neural Network Optimized by Beetle Antennae Search Algorithm

Machines, 2021
High-speed motorized spindle heating will produce thermal error, which is an important factor affecting the machining accuracy of machine tools. The thermal error model of high-speed motorized spindles can compensate for thermal error and improve ...
Zhaolong Li, Bo Zhu, Ye Dai, Wenming Zhu, Qinghai Wang, Baodong Wang   +5 more
doaj   +1 more source

Thermal machine tool error prediction during milling

Procedia CIRP, 2023
56. CIRP International Conference on Manufacturing Systems, CIRP CMS 2023, Cape Town, South Africa, 24 Oct 2023 - 26 Oct 2023; Procedia CIRP 120, 1510-1515 (2024). doi:10.1016/j.procir.2023.09.206 special issue: "56th CIRP International Conference on Manufacturing Systems 2023 / edited by Khumbulani Mpofu, Natasha Sacks, Oliver Damm"
Brecher, Christian, Bergs, Thomas, Plum, Franziska, Liu, Hui, Neus, Stephan   +4 more
openaire   +2 more sources

Singular limit of an integrodifferential system related to the entropy balance

, 2014
A thermodynamic model describing phase transitions with thermal memory, in terms of an entropy equation and a momentum balance for the microforces, is adressed. Convergence results and error estimates are proved for the related integrodifferential system
Bonetti, Elena, Colli, Pierluigi, Gilardi, Gianni   +2 more
core   +1 more source

Strategy for Compensation of Thermally Induced Displacements in Machine Structures Using Distributed Temperature Field Control

Journal of Machine Engineering
Thermal deformation is a major source of machining errors in modern machine tools. In addition to optimising the machine structure, correcting the axis position values in the numerical control is a common measure to reduce these errors.
Patrick Pöhlmann, Jens Müller, Steffen Ihlenfeldt   +2 more
doaj   +1 more source

Thermal switching rate of a ferromagnetic material with uniaxial anisotropy

, 2012
The field dependence of the thermal switching rate of a ferromagnetic material with uniaxial anisotropy was studied by solving the Fokker-Planck equation.
C. W. Gardiner, Hiroshi Imamura, Tomohiro Taniguchi, Y. Suzki   +3 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Thermal error modelling for linear motor feed drive system considering multi-field coupling of electromagnetic-thermal-flow

Case Studies in Thermal Engineering, 2023
Thermal error is a crucial factor affecting the accuracy of linear motor feed drive systems (LMFDS). To improve the prediction accuracy, a thermal error model for LMFDS considering the multi-field coupling of electromagnetic-thermal-flow (EM-TF) is ...
Maolei Chen, Sitong Xiang, Jianguo Yang
doaj   +1 more source

Towards More Accurate Molecular Dynamics Calculation of Thermal Conductivity. Case Study: GaN Bulk Crystals

, 2012
Significant differences exist among literature for thermal conductivity of various systems computed using molecular dynamics simulation. In some cases, unphysical results, for example, negative thermal conductivity, have been found.
A. Balandin, A. C. Davison, A. Greenstein, G. Mahan, J. Nord, N. W. Ashcroft, P. K. Schelling, P. K. Schelling, R. E. Jones, S. Aubry, X. W. Zhou   +10 more
core   +1 more source

Improved tests of extra-dimensional physics and thermal quantum field theory from new Casimir force measurements [PDF]

, 2003
We report new constraints on extra-dimensional models and other physics beyond the Standard Model based on measurements of the Casimir force between two dissimilar metals for separations in the range 0.2--1.2 $\mu$m.
A. Kehagias, A. Lambrecht, A. Roy, A. Roy, B. Abbott, B. Geyer, B. Geyer, B.V. Derjaguin, B.W. Harris, C. Adloff, C. Genet, C. Hanhart, C.A. Bolle, C.D. Hoyle, D. E. Krause, D. López, D.E. Krause, E. Fischbach, E. Fischbach, E. Fischbach, E. Fischbach, E. Fischbach, E.G. Adelberger, E.G. Floratos, E.M. Lifshitz, F. Ayela, F. Chen, F. Chen, F. Chen, F. Ferrer, G. Bressi, G. Feinberg, G. L. Klimchitskaya, G.L. Klimchitskaya, G.L. Klimchitskaya, G.L. Smith, H.B. Chan, H.B. Chan, I. Antoniadis, J. Blocki, J. Chiaverini, J. Mehra, J.C. Long, J.C. Long, J.S. Høye, L. Randall, L. Randall, L.J. Hall, L.S. Brown, M. Bordag, M. Bordag, M. Bordag, M. Bordag, M. Bordag, M. Bordag, M. Boström, M. Fairbairn, M. Schaden, N. Arkani-Hamed, N. Arkani-Hamed, P. Abreu, P. Johansson, R. Esquivel, R. S. Decca, R.S. Decca, R.S. Decca, S. Cassisi, S. Dimopoulos, S. Hannestad, S. Hannestad, S.D. Drell, S.D.H. Hsu, S.K. Lamoreaux, S.K. Lamoreaux, T. Ederth, T. Emig, U. Mohideen, V. M. Mostepanenko, V.B. Bezerra, V.B. Bezerra, V.B. Bezerra, V.B. Bezerra, V.B. Svetovoy, V.M. Mostepanenko, Y. Fujii   +84 more
core   +4 more sources

The Thermal Error Characteristic Analysis and Thermal Error Modeling Compensation of Aspheric Grinder

Mechanics
According to the literature analysis, the thermal error of CNC machine tools is the main factor affecting its processing accuracy, accounting for about 40% -70% ; This paper discusses the structure assembly of Aspherical Grinder, which is the research carrier of thermal error analysis of NC machine tool, and analyzes the characteristics and concrete ...
Bo YU, Xiao-peng CHANG, Lei YU
openaire   +1 more source