Hi Avangi:
Here's the Random House definition for fabricate (Webster's is similar)
1. to make by art or skill and labor; construct: The finest craftspeople fabricated this clock.
2. to make by assembling parts or sections.
3. to devise or invent (a legend, lie, etc.).
4. to fake; forge (a document, signature, etc.).
and Simulate:
1. to create a simulation, likeness, or model of (a situation, system, or the like): to simulate crisis conditions.
2. to make a pretense of; feign: to simulate knowledge.
3. to assume or have the appearance or characteristics of: He simulated the manners of the rich.
So either might suffice in this situation.