Ismail Khan

13 Questions 19 Answers 0 Followers

Questions related from Ismail Khan

Kraft lignin and MMA(Methyl meth acrylate) free radical polymerization for synthesis of thermoplastics?

I am conducting free radical polymerization using Kraft lignin and MMA, with DMSO serving as the solvent and there is also an initiator. Following the reaction, I obtain a solution, but I am...

16 July 2024 9,788 1 View

Kraft Lignin Purification, to have a single melting point ?

Hello Researchers, I am using Kraft lignin, but when i do DSC analysis, it shows two peaks or melting points. MY question is: how can i purify this kraft lignin to get only one peak or melting...

02 April 2024 1,161 3 View

Free radical polymerization of methacrylated lignin with MMA?

Hello everyone, I’m currently working on synthesizing polymers using methacrylated kraft lignin and methyl methacrylate (MMA) through free radical polymerization. My chosen initiator is...

15 March 2024 9,464 9 View

Esterification of Lignin with methacrylic anhydride but Using dmso as Solvent for Lignin Solubility?

Hi, I am using kraft lignin to react it with methacrylic anhydride. The reaction uses THF as a solvent and 1-imidizole as a catalyst . I am just curious: can I use another solvent, like DMSO, in...

12 December 2023 853 0 View

Non linear buckling analysis with imperfection?

Hello Everyone , I am performing a buckling analysis on laminated composites shells. The load I am getting in Non Linear Riks method is greater than the Eigen Value Load . Can someone help me with...

14 May 2017 187 2 View

Non linear buckling analysis with imperfection?

hello every one good day. i am using abaqus to perform a non linear buckling analysis in order to match it the experimental buckling load ,i have to use imperfection in my model but Increased the...

07 May 2017 4,715 3 View

Generation of MESH in cylindrical shell in abaqus?

hello every one i want to create this type(picture attached) of mesh around the cutouts in abaqus can any one help me and tell me the step wise procedure how i can create this....picture is...

24 January 2016 1,023 5 View

How do I include geometric imperfection in a model?

hello every one i m working on delamination buckling analysis in abaqus 6.14... now i want to add geometric imperfection in my model while i m using general static step for buckling analysis...

11 October 2015 6,109 16 View

What is the correct stacking sequence of Composite lay? up[45/0/-45/0/45/0/-45/0/45/0]2s?

hello every one... i m modeling composite laminates consist of an UPPER and Lower part which are tied through a cohesive elements, the stacking sequence is [45/0/-45/0/45/0/-45/0/45/0]2s... Where...

03 October 2015 5,916 5 View

Can anyone help me with the difference between solid and continuum shell layup?

Hello every one..i would be glade if some one could explain to me the difference between creating a solid composite layup and continuum shell lay up(1) How are the plies are assigned to the...

01 September 2015 9,934 1 View

Any advice on the modeling of pre-delamination region in abaqus?

Hello! i want to perform Delamination buckling growth in laminated composites using cohesive elements.. my model consist of two plates with 1e-6 thickness of cohesive element layer i use offset...

06 August 2015 9,427 4 View

Can anyone help with pre-delamination region?

Hello good day I'm regenerating a reference paper model in ABAQUS. I'm working on delamination buckling and its growth in cylindrical laminates using COHESIVE ELEMENT method for modeling...

30 July 2015 6,025 4 View

Any advice on modeling of delamination region in abaqus?

i m working on modeling of delamination region in composite shell,but i don't understand how to create delamination region in cylindrical shell by creating sublaminates within the shell,,,can u...

05 June 2015 8,370 8 View