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

20th Innovative Manufacturing Engineering and Energy Conference

机械制造;能源学

Andrei, Mihalache Marius^1 ; Gheorghe, Nagit^1 ; Gavril, Musca^1 ; Vasile, Merticaru^1 ; Ionut, Ripanu Marius^1

Gheorghe Asachi Technical University of Iasi, Department of Machine Manufacturing Technology, Blvd. D. Mangeron no. 59A, Iasi, Romania^1

关键词: Critical load;    Critical value;    Fea analysis;    Three categories;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/161/1/012071/pdf
DOI  :  10.1088/1757-899X/161/1/012071

来源: IOP

【 摘 要 】

In the present study the authors propose a new algorithm for identifying the right loads that act upon a functional connecting rod during a full engine cycle. The loads are then divided into three categories depending on the results they produce, as static, semi-dynamic and dynamic ones Because an engine cycle extends up to 720°, the authors aim to identify a method of substitution of values that produce the same effect as a previous value of a considered angle did. In other words, the proposed method aims to pin point the critical values that produce an effect different as the one seen before during a full engine cycle. Only those values will then be considered as valid loads that act upon the connecting rod inside FEA analyses. This technique has been applied to each of the three categories mentioned above and did produced different critical values for each one of them. The whole study relies on a theoretical mechanical project which was developed in order to identify the right values that correspond to each degree of the entire engine cycle of a Daewoo Tico automobile.