Browse Publications Technical Papers 2018-01-1064

Finite Element Modeling of Case-Hardened Metal as Multi-Laminated Structure 2018-01-1064

Engineers have been interested in a thorough understanding of how a case-hardened part, consisting of soft substrate (or core) and hard surface, behaves under various types of loads, ranging from extremely destructive load to mild cyclic loads. The use of numeric simulation, such as well known finite element method, has made it much easier to achieve this. Throughout this investigation, the author proposes a methodology to treat such a case-hardened part as multi-laminated metal with a relative thin outer layer whose ultimate tensile strength may be several times as high as its inside core material. In the case studies to demonstrate the technique, a representative automotive component is subject to various loads due to not only the inertia of its own but also that imparted from heavy springs housed within it. A comparison was made between two approaches to account for the hardness transition between the hard layer and soft core. It is interesting to find the two approaches have yielded noticeably different outcomes. The most interesting finding provided by this study is that the failure due to mild cyclic loads may be a little different that from due to destructive loads. In particular, when it is subject to extremely high and non-cyclic loads, the failure usually occurs on the high-strength outer layer.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.

Due to current capacity constraints, printed versions of our publications - including standards, technical papers, EDGE Reports, scholarly journal articles, books, and paint chips - may experience shipping delays of up to four to six weeks. We apologize for any inconvenience.
We also recommend:

The Development/Application of Sheet Metal Forming Technology at Alcoa


View Details


Crack Initiation and Propagation Fatigue Life Prediction for an A36 Steel Welded Plate Specimen


View Details


Modeling the Mechanical Anisotropy of Automotive Low Carbon Steel Sheets


View Details