Essays about: "necking"

Showing result 1 - 5 of 10 essays containing the word necking.

  1. 1. Effects of natural aging and low strain-rate on mechanical properties of aluminium alloy sheets used in automotive industry

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Amirhossein Gholami; Ali Abedisamarin; [2024]
    Keywords : Ageing. AA6014. AA6016;

    Abstract : These days, lightweight materials such as aluminum alloy sheets, especiallythose in the AA6xxx series, are in high demand for use inthe automotive industry. During natural aging, the properties of aluminummay undergo significant changes due to the diffusion of atomswithin the crystal structure, impacting the strength and formabilityof aluminum sheets. READ MORE

  3. 2. Influence from temperature variations in stacking fault energy on the mechanical properties of stainless steels

    University essay from KTH/Materialvetenskap

    Author : Christopher Hallén; Marcus Johansson Storne; [2023]
    Keywords : ;

    Abstract : This paper investigates the mechanical properties and deformation mechanisms of austenitic stainless steels and how they relate to the material property of stacking fault energy (SFE) and its relation to temperature and nickel content. Austenitic stainless steels are commonly used and well known for good mechanical properties and deformation characteristics. READ MORE

  4. 3. Investigation of the basic mechanics of edge cracking in sheet aluminum forming

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Hamidreza Bayat; Mohammad Abbasi; [2023]
    Keywords : Open Hole tensile test; Digital Image Correlation; Strain Rate; Istra 4D; Thickness reduction rate;

    Abstract : As technology is developing in all automotive companies, car body designers have also investigated new materials such as composite and aluminum alloys. Designing modern car structures has also created various challenges in the production process, including formability limitations. READ MORE

  5. 4. Strain rate-dependent mechanical properties of high-density polyethylene(HDPE)

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Oscar Andersson; Alexander Wiklund; [2022]
    Keywords : HDPE; strain rate; DIC; inverse calibration; Abaqus; HDPE; töjningshastighet; DIC; Inverskalibrering; Abaqus;

    Abstract : In today’s packaging industry HDPE is widely used and correct understanding of itsproperties and how to model them is of vital importance. HDPE is a semi-crystallinepolymer with a known strain rate dependence, that is a higher yield and lower strainto failure at higher strain rates. READ MORE

  6. 5. Non-Linear strain paths in Sheet Metal Forming

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Anton Eriksson; [2021]
    Keywords : Sheet metal forming SMF ; Non-Linear strain path NLSP ; Test procedures; Failure models; Finite Element FE ; Plåtformning; Icke-linjära töjningsbanor; Test procedurer; brott model; Finita Element FE .;

    Abstract : Today's automotive requirements have resulted in complex Sheet Metal Forming (SMF) processes of Sheet Metal (SM) with reduced formability, and thus it is crucial to be able to predict formability accurately to prevent material failure during SMF. Formability predictions today utilize Forming Limit Curves (FLC)s in Finite Element Analysis (FEA), but  FLCs are not valid for the Non-Linear Strain Paths (NLSP)s generated during SMF. READ MORE