Title:	Safety margin against the fatigue fracture under random loading
Authors:	Garan, Martin Chmelko, Vladimír Schafer, Ervin
Citation:	GARAN, M., CHMELKO, V., SCHAFER, E. Safety margin against the fatigue fracture under random loading. In MATEC Web of Conferences. New York: Curran Associates, Inc., 2018. s. 1583-1587. ISSN 2261-236X.
Issue Date:	2018
Publisher:	Curran Associates, Inc.
Document type:	konferenční příspěvek conferenceObject
URI:	2-s2.0-85048095937 http://hdl.handle.net/11025/31176
ISSN:	2261-236X
Keywords in different language:	Fracture;Yield stress;Fatigue fracture;Fatigue lifetime;Level of safeties;Loading parameters;Loading process;Material yield;Random loading
Abstract in different language:	The fatigue lifetime of the structure in operation is express in the number of working cycles, kilometersor time depending units. By harmonic process of loading is possible to express the safety margin as reserve against the required lifetime in the form of number cycles or amplitude of loading. By non-harmonic character of loading process in operation is difficult to express the level of safety margin as the reserve of loading (safety margin in loading). On the case of towing trailer will be discussed more ways of expression the reserve (safety margin) of structure against the fatigue fracture for required fatigue lifetime. For experimental acquired loading process in the most loaded cross-section will be discussed concept of determination of the level safety as reserve in the form of loading parameters. In the case, when the peaks of loading process exceeding the material yield stress (in the most loaded point of the structure) will be discussed concept of expression of loading in the form of time-varying process of strain. By using the cyclic material properties obtained in mode with controlled total strain is possible the safety margin to express also as the multiple of process loading parameters.
Rights:	© Curran Associates
Appears in Collections:	Konferenční příspěvky / Conference Papers (RTI) OBD

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