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Reducing the deformation of the transport bracket was the basic means to improve the mate precision between the large tonnage round bar and the bracket. The finite element model of the bracket was established and the actual loading conditions of the bracket for transporting the large tonnage round bar were analyzed by ABAQUS. The deformation and the weak areas of the bracket were investigated by the...
The honeycomb structure collapse during energy absorption and deformation is considered as one of the important subjects for researchers. In this paper, a combined analytical, numerical and experimental analysis on the collapse load of hexagonal aluminum honeycombs due to buckling or plastic collapse of the unit cells under flatwise compressive loading is performed. To analyze the collapse load, some...
In this study, the failure analysis of composite plates repaired with adhesive patch was investigated experimentally and numerically. The failure analysis consisted of two steps: In the first step, the damaged composite plates used in previous studies were repaired with epoxy-based adhesive and patch. In the second step, the repaired composite plates were loaded with pin and the failure analysis was...
Prediction of delamination failure is challenging when the researchers try to achieve the task without overburdening the available computational resources. One of the most powerful computational models to predict the crack initiation and propagation is cohesive zone model (CZM), which has become prominent in the crack propagation studies. This paper proposes a novel CZM using high-dimensional model...
Incremental sheet forming (ISF) significantly exempts use of expensive dies and reduces tooling cost for manufacturing complex parts in the field of sheet metal forming which makes it suitable for manufacturing prototypes and low volume production as compared to other traditional sheet metal forming processes. ISF also finds suitability for producing components of old machinery, which are otherwise...
Sheet metals tend to have an anisotropic behavior due do their manufacturing process; hence, specialized equipment is needed for its mechanical characterization. In this work, the design for a biaxial tensile testing fixture, which can be used along with a universal testing machine for the characterization of sheet metals, is presented. First, a conceptual design of the fixture was generated, considering...
Tailor welded blank (TWB) is a product which is developed by joining two or more than two materials having same/different thickness and/or properties before any forming process. The method to join the materials can be any of the conventional or advanced methods. TWB offers advantages like overall weight and cost reduction in a product. Despite of such advantages, the application of TWBs is partially...
Every structure components on the vehicle undergo varying sizes of loads during the course of their estimated life. The conventional method of load application used in finite element analysis (FEA) considers either the factor of safety or often scale up/down the existing loading condition according to the modified design. This kind of assumptions makes the design either redundant or fragile. In this...
In this study, a combined experimental–numerical method is proposed for quantitatively characterizing the post-necking behavior of cylindrical metal specimens merely through its experimental force–displacement curve during quasi-static tension. This method is based on a rational phenomenological analysis of the correspondence between the necking levels and the experimental variables (force and displacement)...
High pressurisation is one of the important developmental techniques for piston pumps. Given that press-fit cylinder blocks of instruction machinery develop cracks or breakage; based on the DIN 7190(2001) and GB/T 5371-2004, the amounts of interference in the press-fit cylinder block were calculated. The maximum, minimum, and average amounts of interference were 0.1689, 0.0576, and 0.1133 mm, respectively...
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