Analyze compaction using tablet size, strength, and pressure. Compare target force, tensile estimates, and margins. Generate reports fast for validation, scale-up, and troubleshooting work.
| Case | Shape | Size (mm) | Thickness (mm) | Pressure (MPa) | Rel. Density | Dwell (ms) | Setpoint (kN) |
|---|---|---|---|---|---|---|---|
| Example 1 | Round | 10.0 dia | 4.5 | 180 | 0.92 | 18 | 18.88 |
| Example 2 | Oblong | 8.0 × 16.0 | 5.0 | 210 | 0.90 | 14 | 42.11 |
| Example 3 | Round | 12.0 dia | 5.5 | 150 | 0.96 | 22 | 19.33 |
These examples illustrate how geometry, density, dwell time, and process losses shift the recommended main compression force.
Round tablet: A = π × D² / 4
Oblong tablet: A = (L − W) × W + π × W² / 4
Fnominal = Pressure × Area / 1000
Because 1 MPa equals 1 N/mm², the division by 1000 converts newtons to kilonewtons.
Density Factor = 1 + max(0, 0.95 − relative density) × 0.60
Dwell Factor = clamp( √(20 / dwell time), 0.85, 1.25 )
Friction Factor = 1 + friction loss / 100
Efficiency Factor = tooling efficiency / 100
Fadjusted = Fnominal × shape factor × density factor × dwell factor × friction factor / efficiency factor
Fsetpoint = Fadjusted × (1 + safety margin)
Tensile Strength = 2 × Hardness / (π × D × t)
Hardness = Tensile Strength × π × D × t / 2
This tool is intended for engineering estimation, formulation comparison, and press setup planning. Always confirm final values with material trials, tooling limits, and validation data.
It represents the mechanical load applied by the press tooling to compact powder into a tablet. Higher force usually raises density and strength, but excess force can damage tooling, create capping, or reduce product quality.
Dwell time affects how long the powder bed remains under peak compression. Longer dwell often improves bonding and reduces the force needed to reach a target hardness, especially during scale-up and turret speed changes.
Lower relative density often means the powder bed still needs more consolidation. The calculator increases the force estimate when density is lower, helping account for harder compaction conditions and less efficient particle packing.
Yes. The projected area formula changes for oblong shapes, and the tool applies a modest shape factor. Tensile strength for oblong tablets is still an approximation, so validate final settings with actual test data.
No. Hardness is a tablet property measured after compaction, while compression force is the press load applied during manufacturing. The two are related, but the relation depends on formulation, tooling, and process conditions.
Yes. It is useful for comparing setpoints across tablet sizes, dwell times, and tooling conditions. It supports engineering estimates, but production scale-up should still include force maps, trial runs, and qualified acceptance limits.
A safety margin gives room for normal process variability, raw material drift, and station-to-station differences. It helps create a more practical operating setpoint instead of relying only on the theoretical minimum force.
No. They are engineering estimates based on geometry, pressure, and correction factors. Use them for planning and comparison, then confirm with compression trials, hardness testing, friability checks, and formal process validation.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.