A proposed procedure for expressing the behavior of a full engine cycle by identifying its critical load timings

AbstractIn this paper, the dynamic buckling of an elastic cylindrical shell subjected to an axial impact load is analyzed in Hamiltonian system. By employing a symplectic method, the traditional governing equations are transformed into Hamiltonian canonical equations in dual variables. In this system, the critical load and buckling mode are reduced to solving symplectic eigenvalues and eigensolutions respectively. The result shows that the critical load relates with boundary conditions, thickness of the shell and radial inertia force. And the corresponding buckling modes present some local shapes. Besides, the process of dynamic buckling is related to the stress wave, the critical load and buckling mode depend upon the impacted time. This paper gives analytically and numerically some new rules of the buckling problem, which is useful for designing shell structures.

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Increasing the Theoretical Efficiency of The Spark-Ignition Engine Cycle by Adding Inert Gas at Part-Load

Journal of Physics Conference Series ◽

10.1088/1742-6596/1888/1/012009 ◽

2021 ◽

Vol 1888 (1) ◽

pp. 012009

Author(s):

Maciej Paluch ◽

Marcin Noga ◽

Aleksandra Lisowska

Keyword(s):

Spark Ignition ◽

Spark Ignition Engine ◽

Inert Gas ◽

Part Load ◽

Engine Cycle

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Assessment of the potential for soil acidification in North India using the critical load approach and locally derived data for acidic and basic inputs

Chemosphere ◽

10.1016/s0045-6535(03)00585-x ◽

2003 ◽

Vol 53 (8) ◽

pp. 1011-1021 ◽

Cited By ~ 6

Author(s):

Gur Sumiran Satsangi ◽

A.J. Lawrence ◽

A. Lakhani ◽

Ajay Taneja

Keyword(s):

Critical Load ◽

Soil Acidification ◽

North India ◽

Derived Data

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On the methods of critical load estimation of spherical circle axially symmetrical shells

Thin-Walled Structures ◽

10.1016/j.tws.2015.04.003 ◽

2015 ◽

Vol 94 ◽

pp. 293-301 ◽

Cited By ~ 1

Author(s):

J. Awrejcewicz ◽

A.V. Krysko ◽

I.V. Papkova ◽

I.Y. Vygodchikova ◽

V.A. Krysko

Keyword(s):

Critical Load ◽

Load Estimation

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Initial critical load on the ground in the case of a circular foundation

Soil Mechanics and Foundation Engineering ◽

10.1007/bf01711766 ◽

1984 ◽

Vol 21 (6) ◽

pp. 269-272 ◽

Cited By ~ 1

Author(s):

K. E. Egorov ◽

T. I. Finaeva

Keyword(s):

Critical Load

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A lower bound estimate of the critical load in bifurcation analysis for incompressible elastic solids

Mathematics and Mechanics of Solids ◽

10.1177/1081286514543599 ◽

2014 ◽

Vol 20 (1) ◽

pp. 53-79 ◽

Cited By ~ 7

Author(s):

Roger Fosdick ◽

Pilade Foti ◽

Aguinaldo Fraddosio ◽

Salvatore Marzano ◽

Mario Daniele Piccioni

Keyword(s):

Lower Bound ◽

Critical Load ◽

Bifurcation Analysis ◽

Elastic Solids ◽

Lower Bound Estimate

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Scanning Scratch Tests for Evaluating the Adhesion of Thin Oxide Films on Stainless Steel

MRS Proceedings ◽

10.1557/proc-356-863 ◽

1994 ◽

Vol 356 ◽

Cited By ~ 1

Author(s):

V. A. C. Haanappel ◽

H. D. van Corbach ◽

T. Fransen ◽

P. J. Gellings

Keyword(s):

Mechanical Properties ◽

Growth Rate ◽

Stainless Steel ◽

Film Thickness ◽

Critical Load ◽

Deposition Temperature ◽

Chemical Vapour ◽

Organic Chemical ◽

Thin Oxide Films ◽

Type Aisi

AbstractAmorphous alumina films were deposited by metal-organic chemical vapour deposition (MOCVD) on stainless steel, type AISI 304. The MOCVD experiments were performed in nitrogen at low pressure (0.17 kPa (1.25 torr)).The effect of deposition temperature (200 − 380 °C), growth rate, film thickness, and post-deposition thermal treatment on the mechanical properties was studied. The experiments were performed with a scanning-scratch tester. The experiments are based on the estimation of the film adhesion to the substrate by determining a critical load, Lc: the load where the film starts to spall or to delaminate.The best mechanical properties were obtained with unannealed samples. After thermal annealing the critical load decreases. Regarding the unannealed samples, the critical load increased with increasing film thickness. The deposition temperature and the growth rate had no effect on the critical load.

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